About this trial
Substance P is a neuropeptide implicated in the pathogenesis of headache. This study investigates whether its administration can trigger migraine attacks in individuals with migraine without aura.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Age 18 to 65 years of age upon entry into screening
A body weight of 50 to 100 kg
History of migraine without aura for ≥12 months and in accordance with ICHD-3
Between 1-5 monthly migraine days without aura on average across the 3 months prior to screening
Disqualifiers
Any history of a primary or secondary headache disorder other than migraine without aura and infrequent episodic tension-type headache
Any history of moderate to severe traumatic brain injury
Any history of cardiovascular disease, including cerebrovascular diseases
Any history of pulmonary disease
Trial design
Crossover
Treatments tested in this trial
Substance P
DrugThe participants will receive a continuous intravenous infusion of 20 mL of substance P (4.0 pmol/kg/min) over 20 minutes.
Placebo
DrugThe participants will receive a continuous intravenous infusion of 20 mL of placebo (isotonic saline) over 20 minutes.
Treatment groups
Trial outcomes
Primary outcomes
Incidence of migraine attacks without aura
The difference in the incidence of migraine attacks without aura between substance P and placebo during the 12-hour observational period after infusion start.
Secondary outcomes
Headache intensity scores
The secondary outcome is the difference in the area under the curve (AUC) for headache intensity scores between substance P and placebo during the 12-hour observational period after infusion start.
Sponsors and contacts
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Danish Headache Center
Lead sponsor
Rigshospitalet, Denmark
Sponsor institution