Hypersensitivity to Opening of ATP-Sensitive Potassium Channels in Post-Traumatic Headache

Hypersensitivity to Opening of ATP-Sensitive Potassium Channels in Post-Traumatic Headache: A Randomized Clinical Trial

The aim is to investigate whether opening of ATP-sensitive potassium (KATP) channels induces headache with migraine-like features in people with persistent post-traumatic headache (PTH) attributed to mild traumatic brain injury (mTBI).

Study Overview

• Status: Completed
• Conditions: Post-Traumatic Headache
• Intervention / Treatment: Drug: Placebo; Drug: Levcromakalim

• Study Type: Interventional
• Enrollment (Actual): 21
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Denmark
  • Copenhagen, Denmark, 2600
    • Danish Headache Center

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 65 years (ADULT, OLDER_ADULT)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Age 18 to 65 years of age upon entry into screening
• History of persistent headache attributed to mild traumatic injury to the head for ≥ 12 months and in accordance with the International Classification of Headache Disorders, 3rd Edition (ICHD-3)
• ≥ 4 monthly headache days on average across the 3 months prior to screening
• Provision of informed consent prior to initiation of any study-specific activities/procedures.

Exclusion Criteria:

• > 1 mild traumatic injury to the head
• History of any primary or secondary headache disorder prior to mild traumatic injury to the head (except for infrequent episodic tension-type headache)
• History of moderate or severe injury to the head
• History of whiplash injury
• History of craniotomy
• History or evidence of any other clinically significant disorder, condition or disease (except for those outlined above) than, in the opinion of the site investigator, would pose a risk to subject safety or interfere with study evaluation, procedures or completion
• The subject is at risk of self-harm or harm to others as evidenced by past suicidal behavior
• Female subjects of childbearing potential with a positive pregnancy test during any study visit
• Cardiovascular disease of any kind, including cerebrovascular diseases
• Hypertension (systolic blood pressure of ≥150 mmHg and/or diastolic blood pressure of ≥100 mmHg) prior to the start of infusion on the experimental day
• Hypotension (systolic blood pressure of ≤90 mmHg and/or diastolic blood pressure of ≤50 mmHg)
• Initiation, discontinuation, or change of dosing of prophylactic medications within 2 months prior to study inclusion
• Intake of acute medications (e.g. analgesics, triptans) within 48 hours of infusion start
• Baseline headache intensity of >3 on an 11-point numeric rating scale (0 being no headache, 10 being the worst imaginable headache)
• Baseline headache with migraine-like features or self-reported baseline headache that mimics the subjects' usual headache with migraine-like features

Study Plan

How is the study designed?

Design Details

• Primary Purpose: BASIC_SCIENCE
• Allocation: RANDOMIZED
• Interventional Model: CROSSOVER
• Masking: QUADRUPLE

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
PLACEBO_COMPARATOR: Placebo (isotonic saline); A time- and volume-controlled infusion pump is used to administer placebo (isotonic saline) by intravenous infusion over 20 minutes.	Drug: Placebo; Study participants will be allocated to receive continuous intravenous infusion of 20 mL placebo (isotonic saline).; Other Names: Isotonic Saline
EXPERIMENTAL: Levcromakalim; A time- and volume-controlled infusion pump is used to administer levcromakalim by intravenous infusion over 20 minutes.	Drug: Levcromakalim; Study participants will be allocated to receive continuous intravenous infusion of 0.05 mg/min (20 ml of 50 mg/ml) levcromakalim.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Incidence of Migraine-Like Headache	Difference in incidence of headache with migraine-like features (0 to 12 hours) between levcromakalim and placebo.	12 Hours

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Headache Intensity Scores	Difference in area under the curve (AUC) for headache intensity scores (0 to 12 hours) between levcromakalim and placebo.	12 Hours

Collaborators and Investigators

• Sponsor: Danish Headache Center

Study record dates

Study Major Dates

• Study Start (ACTUAL): March 21, 2022
• Primary Completion (ACTUAL): July 7, 2022
• Study Completion (ACTUAL): July 7, 2022

Study Registration Dates

• First Submitted: February 8, 2022
• First Submitted That Met QC Criteria: February 16, 2022
• First Posted (ACTUAL): February 17, 2022

Study Record Updates

• Last Update Posted (ACTUAL): July 8, 2022
• Last Update Submitted That Met QC Criteria: July 7, 2022
• Last Verified: July 1, 2022

More Information

Terms related to this study

• Keywords: Pain; Headache
• Additional Relevant MeSH Terms: Brain Diseases; Central Nervous System Diseases; Nervous System Diseases; Immune System Diseases; Pain; Neurologic Manifestations; Headache Disorders; Headache Disorders, Secondary; Hypersensitivity; Headache; Post-Traumatic Headache; Physiological Effects of Drugs; Antihypertensive Agents; Vasodilator Agents; Parasympatholytics; Autonomic Agents; Peripheral Nervous System Agents; Bronchodilator Agents; Anti-Asthmatic Agents; Respiratory System Agents; Cromakalim
• Other Study ID Numbers: H-21043704

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No