CGRP's Cluster Headache Inducing Abilities in Cluster Headache Patients
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ClinicalTrials.gov Identifier: NCT02466334 |
Recruitment Status : Unknown
Verified December 2017 by Song Guo, Danish Headache Center.
Recruitment status was: Active, not recruiting
First Posted : June 9, 2015
Last Update Posted : December 19, 2017
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It has previously been shown that nitroglycerine induces cluster headache attacks in episodic cluster headache patients (ECH patients) in bouts but not in remission phase. Furthermore, plasma concentrations of calcitonin gene-related peptide (CGRP) have been shown to be significantly higher during, but not before and after, an attack.
The attack appears around 20-40 min after nitroglycerine infusion with vasodilatation. During this latency period preceding the attack, no increase in CGRP plasma concentrations is seen. CGRP induces migraine attacks in 65% of migraine patients, and CGRP antagonists as well as monoclonal antibodies against CGRP are effective in migraine treatment.
Based on the above the investigators hypothesize the following:
- Provoking ECH patients in bout with CGRP triggers cluster headache attacks
- Provoking ECH patients in remission with CGRP does not trigger cluster headache attacks
- Provoking chronic cluster headache patients with CGRP triggers cluster headache attacks more often than in ECH patients.
Condition or disease | Intervention/treatment | Phase |
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Cluster Headache | Drug: Calcitonin-Gene Related Peptide Drug: Placebo | Not Applicable |
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 37 participants |
Allocation: | Randomized |
Intervention Model: | Crossover Assignment |
Masking: | Double (Participant, Investigator) |
Primary Purpose: | Basic Science |
Official Title: | CGRP's Cluster Headache Inducing Abilities in Cluster Headache Patients |
Study Start Date : | June 2015 |
Actual Primary Completion Date : | March 2017 |
Estimated Study Completion Date : | December 2018 |

Arm | Intervention/treatment |
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Active Comparator: Active
1.5µg/min IV calcitonin-gene related peptide for 20 minutes
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Drug: Calcitonin-Gene Related Peptide
1,5 µg/min of IV CGRP over 20 mins
Other Name: CGRP |
Placebo Comparator: Placebo
IV placebo for 20 minutes
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Drug: Placebo
40 ml of normal saline over 20 mins
Other Name: Normal saline |
- Differences in occurence of cluster headache attacks on CGRP day compared to placebo day in all three groups [ Time Frame: 90 min after administration of study drug ]Occurence of experimentally induced cluster headache attack yes/no
- AUC headache on CGRP day compared to placebo day in all three groups [ Time Frame: 90 min after administration of study drug ]Using 90 min headache questionnaire
- Time to maximum headache score on CGRP day compared to placebo day in all three [ Time Frame: 90 min after administration of study drug ]Using 90 min headache questionnaire

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Ages Eligible for Study: | 18 Years to 65 Years (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Fulfillment of IHS criteria for cluster headache either chronic or episodic
- Patients in bouts 1-32 attacks per week
- Patients in remission minimum of 1 month remission time
- fertile women must use safe contraception
Exclusion Criteria:
- All other primary types of headache
- headache 8 hours or less before study day begins
- pregnant or lactating women
- any history or clinical sigs of hyper/hypotension, heart disease, mental disorder, substance abuse, or other illness deemed relevant by the medical doctor assessing the patient

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT02466334
Denmark | |
Danish Headache Center | |
Copenhagen, Glostrup, Denmark, 2600 |
Principal Investigator: | Messoud Ashina, MD, PhD,DMSc | Danish Headache Center |
Responsible Party: | Song Guo, Medical doctor, Ph.d. student, Danish Headache Center |
ClinicalTrials.gov Identifier: | NCT02466334 |
Other Study ID Numbers: |
H-15006836 |
First Posted: | June 9, 2015 Key Record Dates |
Last Update Posted: | December 19, 2017 |
Last Verified: | December 2017 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | Undecided |
Cluster Headache Headache Pain Neurologic Manifestations Trigeminal Autonomic Cephalalgias Headache Disorders, Primary Headache Disorders Brain Diseases Central Nervous System Diseases |
Nervous System Diseases Calcitonin Salmon calcitonin Calcitonin Gene-Related Peptide Katacalcin Calcium-Regulating Hormones and Agents Physiological Effects of Drugs Bone Density Conservation Agents Vasodilator Agents |