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Cannabis DependencePhase 2NCT00167297

Atomoxetine for the Treatment of Cannabis Dependence

A Phase 2 study testing Atomoxetine in people with Cannabis Dependence, run by National Institute on Drug Abuse (NIDA) at 1 site in United States.

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 small open-label trial is to evaluate the feasibility of recruiting cannabis dependent patients for treatment with Atomoxetine and MIT. The clinical data to date on Atomoxetine has been limited to children and adults with attention deficit disorder without co-morbid substance dependence. 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?
Atomoxetine
Could I receive a placebo?
No, everyone receives an active treatment
How many people
16 participants
Where
1 siteUnited States
Study dates
Nov 2004to Jul 2005
Phase
Phase 2
Are there results?
None posted in the registry

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

  • Males and females, 18-65 years old
  • Meets DSM-IV criteria for Cannabis Dependence
  • Live within a commutable distance of the Treatment Research Center
  • Understands and signs the informed consent

Who cannot join

  • Current DSM-IV diagnosis of any psychoactive substance dependence other than marijuana, or nicotine dependence
  • History of a learning disability
  • History of a diagnosis of ADHD made by a psychiatrist.
  • Concomitant treatment with psychotropic medications, especially Monoamine Oxidase Inhibitors
  • Mandated to treatment based upon a legal decision or as a condition of employment
  • Current severe psychiatric symptoms, e.g. psychosis, dementia, acute suicidal or homicidal ideation, mania or depression requiring antidepressant therapy, or which could make it unsafe for the patient to participate in the opinion of the primary investigators.
Show all 15Show fewer
  • Use of any investigational medication within the past 30 days
  • Current treatment with pressor agents or albuterol.
  • History of narrow angle glaucoma.
  • History of significant, unstable heart disease, including myocardial infarction, unstable angina, cardiac failure, second or third degree heart block, or uncontrolled hypertension
  • Known hypersensitivity to atomoxetine
  • Subjects with known AIDS or other serious illnesses, which may require hospitalization during the study
  • Female subjects who are pregnant or lactating, or female subjects of child bearing potential who are not using acceptable methods of birth control. Acceptable methods of birth control include:
  • Barrier (diaphragm or condom) with spermicide Intrauterine device Levonorgestrel implant Medroxyprogesterone acetate contraceptive injection Oral contraceptives
  • -Clinical laboratory tests (CBC, blood chemistries, urinalysis) outside normal limits that are clinically unacceptable to the principal investigators. On EKG, 1st degree heart block, sinus tachycardia, left axis deviation, and nonspecific ST or T wave changes are allowed. Liver function tests (LFT's) <5 times ULN without symptoms of liver disease are acceptable after thorough medical review.

Trial locations and contacts

1 site in 1 country.

United States1 site

  • University of Pennsylvania Treatment Rersearch Center

    Philadelphia, Pennsylvania, 19104

Other trials in United States

About this study

Official title: A Pilot Trial of Atomoxetine to Enhance Motivational Interviewing Therapy for the Treatment of Cannabis Dependence

The purpose of this small open-label trial is to evaluate the feasibility of recruiting cannabis dependent patients for treatment with Atomoxetine and MIT. The clinical data to date on Atomoxetine has been limited to children and adults with attention deficit disorder without co-morbid substance dependence. However, one study estimated that adults with attention deficit disorder have rates of drug abuse three to four times higher than controls (Mannuzza S 1998). The study also reported that cannabis and cocaine are most frequently abused in this population.

Read the detailed description

This is a Phase 2 open-label study. We will recruit 10 cannabis dependent subjects and treat them with the combination of Atomoxetine and MIT to reduce their consumption of cannabis. Subjects will be 10 men and women with current DSM-IV diagnosis of cannabis dependence. All patients will receive Atomoxetine and four sessions of MIT. The study length for each patient will be one week for baseline screening and starting medication. This is followed by 8 weeks of medication and an end of study visit one week after completing medications.

The PI will review all information collected regarding the subject's eligibility for the study. The subject will return approximately four days later, and if the PI finds the subject suitable for the study, the subject will begin taking study medication. This visit is referred to as visit 2. During visit 2, the PI will monitor the subject for concomitant medications and adverse events. The research technician will collect Vital Signs, Weight, BAL, the TLFB, a Urine Tox Screen and THC/CR ratio. Both visits 1 and 2 will be conducted within the first week of the study. Starting at visit 2, subjects will take one 25mg capsule of Atomoxetine orally for seven days. Beginning at visit 3, subjects will increase the dose to 40mg per day for 3 days, followed by 80mg (two 40mg capsules concurrently) for the other four days of the second week. Beginning with week 3, subjects will take two 40mg capsules (80mg total) every day of the week for 6 weeks.

Being tested
Atomoxetine
Keywords
atomoxetine, cannabis dependence, treatment
Medical subject headings
Marijuana Abuse

What participants receive

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

  • AtomoxetineDrug

Study groups in NCT00167297
Study groupRoleWhat they receive
AtomoxetineExperimentalAtomoxetine (Strattera) 25mg peroral (PO) each day for seven days, then up to 40mb bid 40mg PO each day for three days, then 80mg PO bid.
Receives: Drug: Atomoxetine

What is being measured

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

  1. Marijuana use in patients treated with atomoxetine and Motivational Interviewing Therapy measured using weekly urine drug screens.

    Measured: 8 weeks

Secondary outcomes (1)

  1. Tolerability of atomoxetine: Tolerability will be assessed by examining the rates of certain adverse events during the treatment phase.

    Measured: 8 weeks

Timeline

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

  1. First posted14 Sep 2005 (estimated)
  2. Study startNov 2004
  3. Primary completionJul 2005
  4. Study completionJul 2005

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
Non-randomised
Intervention model
Single group
Masking
None (open label)
Enrolment
16 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00167297
Sponsor's protocol ID
801701
Other IDs
P60DA005186-17, T32MH019126-14, T32MH019126-15, T32MH019126-16
Status last verified
Jun 2010
First submitted
9 Sep 2005
Last updated
11 Jan 2017
Results posted
No
Data monitoring committee
No

Publications

  • Tirado CF, Goldman M, Lynch K, Kampman KM, Obrien CP. Atomoxetine for treatment of marijuana dependence: a report on the efficacy and high incidence of gastrointestinal adverse events in a pilot study. Drug Alcohol Depend. 2008 Apr 1;94(1-3):254-7. doi: 10.1016/j.drugalcdep.2007.10.020. Epub 2008 Jan 7.

    PubMed 18182254

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Atomoxetine in people with Cannabis Dependence, run by National Institute on Drug Abuse (NIDA) at 1 site in United States.

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 4 inclusion and 15 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 11 Jan 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 United States. 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. 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?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

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?

Marijuana use in patients treated with atomoxetine and Motivational Interviewing Therapy measured using weekly urine drug screens. (time frame: 8 weeks). 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 NCT00167297, 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 11 Jan 2017.

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