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Cannabis DependencePhase 2NCT01747850

Sativex and Behavioral-relapse Prevention Strategy in Cannabis Dependence

A Phase 2 study testing Motivational Enhancement/Cognitive Behavioral Therapy and Sativex in people with Cannabis Dependence, run by Centre for Addiction and Mental Health at 1 site in Canada.

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

The purpose of this study is assess Sativex as a treatment for Cannabis dependence. Initially a pilot study will be conducted in five subjects seeking treatment for cannabis dependence to ensure that our planned self-titration regimen is appropriate using Sativex. Read more about this study

Who is it for?
Ages 18 to 65 years
Conditions the study is for
Cannabis Dependence
What is being tested?
Motivational Enhancement/Cognitive Behavioral Therapy and Sativex
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
45 participants
Where
1 siteCanada
Study dates
Mar 2013to Nov 2015
Phase
Phase 2
Are there results?
Yes, posted in the registrySummary in the doctors' view

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
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Adult male or female (gender to be analyzed as a covariate)
  • Understand and willing to comply with study requirements and restrictions
  • Willing to use appropriate contraceptive method throughout the study
  • Otherwise healthy as judged by investigator based on medical history, physical exam, vitals, ECG and labs
  • DSM-IV criteria for current marijuana dependence
  • Report marijuana as primary drug of abuse
Show all 10Show fewer
  • Report using marijuana at least 5 days a week for at least one month
  • Have marijuana positive urine drug screen
  • Treatment seeking cannabis smoker
  • Smoke less than or equal to the equivalent of 4 joints per day (or four grams per day if participants smokes cannabis in other forms)

Who cannot join

  • Meets DSM-IV criteria for a current axis I disorder including substance use disorder other than cannabis, nicotine or caffeine dependence.
  • First-degree relative with schizophrenia
  • History of seizures
  • History of cardiovascular disease
  • History of pulmonary disease such as asthma, COPD
  • Clinically significant pathology in oral cavity and poor oral hygiene
Show all 11Show fewer
  • Known sensitivity to dronabinol, cannabidiol, propylene glycole, ethanol or peppermint oil (used in SATIVEX® buccal spray)
  • Unstable medical conditions
  • Pregnant or breast-feeding
  • Currently taking psychotropic medication with benefit for any other illness than treatment of insomnia,
  • Holding a job that involves driving, operating heavy machines

Trial locations and contacts

1 site in 1 country.

Canada1 site
  • Centre for Addiction and Mental Health

    Toronto, Ontario, M5S 2S1

Other trials in Canada

About this study

Official title: Sativex Associated With Behavioral-relapse Prevention Strategy as Treatment for Cannabis Dependence

The purpose of this study is assess Sativex as a treatment for Cannabis dependence. Initially a pilot study will be conducted in five subjects seeking treatment for cannabis dependence to ensure that our planned self-titration regimen is appropriate using Sativex. This phase will be open label, with no placebo control. Then, there will be a twelve-week, double-blind, placebo-controlled study in male and female subjects seeking treatment for cannabis dependence (n=40). All participants will receive a combination of pharmacotherapy (Sativex Spray or Placebo Spray) associated with a weekly intervention of combined Motivational Enhancement Therapy and Cognitive Behavioral Therapy (MET/CBT). The subjects will have to come daily to the centre to assess usage of medication. Following the medication phase, participants will have a follow-up weekly for another four weeks and then monthly until the 6 month follow up visit after the target quit date. The investigators are planning to enroll 45 subjects over the two-year period.

Read the detailed description

In the pilot study subjects will be treated with SATIVEX® (THC/cannabidiol combination in a buccal spray) using the same approach as outlined below for the randomized controlled trial. In the twelve-week, double-blind, placebo-controlled study visits will occur weekly during the medication phase of the study. The medication will be self-titrated over three weeks and a target quit date will be set up at Day 21. There will be a total of 12 weeks of drug exposure. Throughout these 12-weeks, all participants will receive a combination of pharmacotherapy (Sativex Spray or Placebo Spray) associated with a weekly intervention of combined Motivational Enhancement Therapy and Cognitive Behavioral Therapy (MET/CBT) in accordance with the intervention practices shown to be effective in treatment of cannabis dependence. The intervention will be adapted from the Brief Counselling for Marijuana Dependence manual published by the Substance Abuse and Mental Health Services Administration (SAMHSA). At each study visit, vital signs and self-report ratings will be collected. In addition, the subjects will have to come daily to the centre to assess medication usage and will be asked to provide urine sample (two times weekly) and blood sample weekly. As there may be compliance issues, a contingency management approach will be also implemented.

Being tested
Motivational Enhancement/Cognitive Behavioral Therapy, Sativex, Placebo spray
Medical subject headings
Marijuana Abuse

What participants receive

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

  • Motivational Enhancement/Cognitive Behavioral TherapyBehavioural

    All participants will receive a combination of pharmacotherapy (Sativex or Placebo) associated with a weekly intervention of combined Motivational Enhancement Therapy and Cognitive Behavioral Therapy.

  • SativexDrug

    Also called delta-9-tetrahydrocannabinol and cannabidiol

    Study subjects will gradually increase the maximal allowed dose of Sativex starting at five sprays per day for the first two days and increasing of five sprays per day until reaching the max number of 42 sprays maximal per day at end of week 2 (Day 11). The target quit date will be set at Day 21 (but subjects will be allowed to stop using cannabis before if they are willing and able to). The medication treatment phase will then be continued for an additional 9 weeks (the last week will be a reduction phase with the use of Spray that will be decreased by 50% to avoid abrupt withdrawal). Then exposure to medications will be stopped (so there will be a total of 12 weeks medication treatment exposure).

  • Placebo sprayDrug

    Also called Ethanol,propylene glycol,and peppermint oil with colors

    Study subjects will gradually increase the maximal allowed dose of Placebo starting at five sprays per day for the first two days and increasing of five sprays per day until reaching the max number of 42 sprays maximal per day at end of week 2 (Day 11). The target quit date will be set at Day 21 (but subjects will be allowed to stop using cannabis before if they are willing and able to). The Placebo treatment phase will then be continued for an additional 9 weeks (the last week will be a reduction phase with the use of Placebo Spray that will be decreased by 50%). Then exposure to Placebo will be stopped (so there will be a total of 12 weeks Placebo treatment exposure).

Study groups in NCT01747850
Study groupRoleWhat they receive
SativexExperimentalIntervention consist on Sativex Spray (Δ9-tetrahydrocannabinol/cannabidiol). Study subjects will be randomized in blocks of ten to one of the two groups (Sativex vs. placebo) in a double blind manner. There will be a gradual increase of the maximal allowed dose starting at five sprays per day for the first two days and increasing of five sprays per day until reaching the max number of 42 sprays per day at the end of week 2. There will be a total of 12 weeks of drug exposure. All participants will receive a combination of pharmacotherapy (Sativex or Placebo) associated with a weekly intervention of combined Motivational Enhancement/Cognitive Behavioral Therapy.
Receives: Behavioral: Motivational Enhancement/Cognitive Behavioral Therapy; Drug: Sativex
Placebo sprayPlacebo comparatorParticipants will receive a combination of Placebo spray associated with a weekly intervention of combined Motivational Enhancement Therapy and Cognitive Behavioral Therapy
Receives: Behavioral: Motivational Enhancement/Cognitive Behavioral Therapy; Drug: Placebo spray
Pilot StudyExperimentalThe first five subjects will be treatment-seekers that fit our inclusion/exclusion criteria and that will be treated open-label. These subjects will be instructed to use the Sativex Spray according to the induction schedule provided above. These first subjects will allow us to determine if our schedule for dosing is appropriate for the subsequent phase of the study.
Receives: Behavioral: Motivational Enhancement/Cognitive Behavioral Therapy; Drug: Sativex

What is being measured

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

  1. Tolerability

    Assessment of tolerability will be determined by the number of subjects that withdrawal from the study due to SAEs.

    Measured: six months

Secondary outcomes (4)
  1. Cannabis Use (in Days)

    The percentage of days that participants self-reported use of cannabis over the study duration until 6 month follow-up will be assessed (i.e. smoking diary self-report)

    Measured: six months

  2. Withdrawal

    Effect of Sativex on withdrawal symptom scores will be assessed using the Marijuana Withdrawal Checklist (MWC). Average Total score for the trial (6 months) is reported.

    Range 0 - 46. Higher scores indicate more severe symptoms associated with marijuana withdrawal.

    Measured: six months

  3. Cannabis Craving

    Effect of Sativex on cannabis craving will be assessed using the Marijuana Craving Questionnaire (MCQ). Average Total score for the trial (6 months) is reported.

    Participants rate the 12 items using a 7-item Likert scale ranging from strongly disagree to strongly agree, and the total score ranges from 4 to 28 (subscales compulsivity (mean items 2, 7 and 10), emotionality (mean items 4, 6 and 9), expectancy (mean items 5, 11 and 12) and purposefulness (mean items 1, 3 and 8); total score is the sum for the 4 subscales). Higher scores indicate more severe craving for marijuana.

    Measured: six months

  4. Cannabis Use (Grams)

    Amount of cannabis used in grams over the study duration until 6 month follow-up will be assessed

    Measured: six months

Timeline

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

  1. First posted12 Dec 2012 (estimated)
  2. Study startMar 2013
  3. Primary completionNov 2015
  4. Study completionNov 2015

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 2
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Triple blind
Who is masked
Participant, Care provider, Investigator
Enrolment
45 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT01747850
Sponsor's protocol ID
144/2011
Other IDs
R21DA031906
Status last verified
Jul 2017
First submitted
7 Dec 2012
Last updated
2 Oct 2017
Data monitoring committee
Yes
Individual data sharing
No

Publications

  • Wang R, Trigo JM, Le Foll B. Effects of sub-chronic nabiximols on biological markers of individuals undergoing a clinical trial for the treatment of cannabis use disorder. Am J Transl Res. 2023 Aug 15;15(8):5228-5238. eCollection 2023.

    PubMed 37692969

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Motivational Enhancement/Cognitive Behavioral Therapy and Sativex in people with Cannabis Dependence, run by Centre for Addiction and Mental Health at 1 site in Canada.

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 10 inclusion and 11 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 2 Oct 2017. 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 Canada. 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.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 2 Oct 2017). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

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?

Tolerability (time frame: six months). 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 NCT01747850, 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 2 Oct 2017.

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