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Cannabis for Chronic Headaches in Adolescents: the CAN-CHA Trial

A Multi-Centre, Tolerability Study of a Cannabidiol-enriched Cannabis Herbal Extract for Chronic Headaches in Adolescents: the CAN-CHA Trial

Status
Recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05337033
Acronym
CAN-CHA
Enrollment
20
Registered
2022-04-20
Start date
2024-10-11
Completion date
2025-12-31
Last updated
2025-05-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Chronic Migraine

Keywords

Adolescents, Children, Cannabis, Migraine, Cannabidiol, Tetrahydrocannbinol

Brief summary

Chronic headaches are a major cause of disability among adolescents. Cannabis products have supported the management of headaches in adults and may play a role in pediatric chronic pain. We propose a multisite, open-label, tolerability study conducted across three centers in Canada of Cannabidiol-enriched Cannabis Herbal Extract in adolescents (ages 14 to 17 years old) with chronic headaches. The study includes a one month baseline assessment, four months of escalating treatment doses and a weaning period. Our primary outcome is tolerability defined as the number and severity of reported adverse events.

Interventions

CBD50 plus is a medical cannabis oil with flavouring agent produced under Good Manufacturing Practice by MediPharm Labs and purchased for this study. Each ml of oil contains 2 mg/ml of delta-9-THC and 50 mg/ml of CBD. Participants will receive escalating doses from 0.2-0.4 mg/kg/day of CBD to 0.8-1 mg/kg of CBD per day for four months, with dose increases monthly in 0.2mg/kg increments. Participants will following a weekly weaning protocol.

Sponsors

SickKids Foundation
CollaboratorOTHER
University of Manitoba
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Intervention model description

Open label tolerability trial

Eligibility

Sex/Gender
ALL
Age
14 Years to 17 Years
Healthy volunteers
No

Inclusion criteria

To be eligible to participate in this study, an individual must meet all of the following criteria: 1. Adolescents aged between 14-17 years of age at the time of screening. 2. Diagnosed with Chronic Migraine according to ICHD-3: headache (migraine-like or tension-type like) occurring on 15 or more days per month for more than 3 months which on at least 8 days per month have features of migraine headache. \[121\] 3. Failed at least two treatment options on the grounds of safety (tolerability) and/or efficacy, including but not limited to antidepressant (tricyclic antidepressant or selective norepinephrine reuptake inhibitor), magnesium, gabapentinoids topiramate and/or non-pharmacological therapies. 4. Females who have reached menarche should have a negative pregnancy test during screening. 5. Must be willing to engage with psychology and physiotherapy throughout the trial as appropriate.

Exclusion criteria

1. As per the investigator judgement, the participant is not an ideal candidate due to a personal issue or medical condition that is likely to impede in the successful completion of the study 2. Participants with a history of post-concussion headache or new daily persistent headache 3. Participants with a diagnosis of medication overuse headache 4. Participants with cardiac, renal or hepatic disease (assessed by the site investigator) 5. Participants with complex regional pain syndrome-II 6. Participants with abnormal ECG findings at baseline (as determined by the investigator) 7. Participants who are on the following medications: opioids, antipsychotics, antimanic, barbiturates, benzodiazepines, muscle relaxants, sedatives, or tramadol. 8. Participants with developmental delay or impairments including autism, cerebral palsy or intellectual disability. 9. Participants with a personal or family history of schizophrenia or psychotic disorders 10. Participants who are pregnant or breast/chest-feeding or plans to become pregnant within the study period or within three months of interventional product discontinuation 11. Participants who cannot commit to using contraception and refraining from recreational cannabis use and driving throughout the study period 12. Participants with known allergy to cannabinoids and/or palm/coconut oil

Design outcomes

Primary

MeasureTime frameDescription
Cannabis-related adverse eventsReported daily through study completion, an average of 6 monthsThe frequency of adverse events will be measured and characterized using standard CTCAE coding

Secondary

MeasureTime frameDescription
Pain intensity compared to baselineReported daily through study completion, an average of 6 monthsThe average intensity measured using a Numeric Rating Scale (NRS) will be reported as a percentage change from the monthly average documented at baseline and an increasing score(highest score =10) indicates a greater severity of pain.
Pain impact on participants quality of life compared to baselineReported monthly for 6 monthsThe impact of pain on participants quality of life using the PROMIS Pediatric Pain Interference- Short Form 8a will be reported as a percentage change from the monthly average documented at baseline.
Number of hours of sleep per night compared to baselineReported daily through study completion, an average of 6 monthsThe number of hours of sleep per night will be measured using a actigraphy device
Change in sleep qualityReported monthly for 6 monthsPatient Reported Outcome Measurement Information System (PROMIS) Pediatric Short Form v 2.0 - Pediatric Sleep-Related Impairment 8a scale as a percentage change from the monthly average documented at baseline where a higher number indicates a more sleep related impairment
The frequency and duration of headache compared to baselineReported daily through study completion, an average of 6 monthsReported headache frequency and duration daily and reported as a monthly average documented at baseline.
Change in mood, positive affect from baselineReported monthly for 6 monthsChange in mood, positive affect will be evaluated using PROMIS Pediatric Positive Affect - Short Form 8 and reported as a percentage change from the monthly average documented at baseline
Change in self-directed goal attainment from baselineReported monthly for 6 monthsParticipants will self-directed goal attainment (participant and parent reported) as a percentage of goal attained at each study visit
Changes in anxiety compared to baselineReported monthly for 6 monthsChanges in anxiety will be measured using the PROMIS Pediatric Anxiety Short Form v2.0 and reported as percentage change from the monthly average documented at baseline
Change in mood, depression from baselineReported monthly for 6 monthsPROMIS Pediatric Short Form v2.0 - Depressive Symptoms 8a scale as a percentage change from the monthly average documented at baseline

Countries

Canada

Contacts

Primary ContactLauren E Kelly, PhD
lauren.kelly@umanitoba.ca2042723149
Backup ContactLauren Kelly
lauren.kelly@umanitoba.ca2042723149

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 5, 2026