Methamphetamine DependencePhase 2NCT01215929
Studying Amphetamine Withdrawal in Humans
A Phase 2 study testing Dextroamphetamine in people with Methamphetamine Dependence, run by University of Arkansas at 1 site in United States.
Trial summary
Methamphetamine use is very common in the US and is associated with serious medical and psychiatric problems. There has also been a significant increase in the number of patients entering treatment for methamphetamine dependence, however, no pharmacologic treatment has been identified as effective in treating… Read more about this study
- Who is it for?
- Ages 21 to 65 years
- Conditions the study is for
- Methamphetamine Dependence
- What is being tested?
- Dextroamphetamine
- Type of treatment
- Pill or oral medicine
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 35 participants
- Where
- 1 siteUnited States
- Study dates
- Oct 2009to May 2014
- 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 21 to 65 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- 21-65 years old
- not currently enrolled in a treatment program
- history of methamphetamine use with recent use confirmed by a positive urine toxicology screen for amphetamines during the month prior to study entry
- self-reported Methamphetamine use on at least 15 of the past 30 days
- use of at least one half gram of methamphetamine per week during the month prior to study entry
- women of childbearing age must have a negative pregnancy test to enroll in this study
Who cannot join
- current diagnosis of alcohol, opiate, or sedative physical dependence
- ill health (e.g., major cardiovascular, renal, endocrine, hepatic disorder)
- history of schizophrenia, or bipolar type I disorder
- present or recent use of over-the-counter or prescription psychoactive drug or drug(s) that would be expected to have major interaction with d-amphetamine
- medical contraindication to receiving study medications (e.g., previous adverse reaction to d-amphetamine)
- chronic pain condition (due to impact on neurophysiological responses
Show all 10Show fewer
- current suicidality or psychosis
- liver function tests (i.e., liver enzymes) greater than three times normal levels
- pregnancy or breastfeeding
- children 18-20 will be excluded because the P50 potential is not fully developed in children and adolescents
Trial locations and contacts
1 site in 1 country.
United States1 site
University of Arkansas for Medical SCiences
Little Rock, Arkansas, 72205
About this study
Official title: Amphetamine Withdrawal Paradigm in Humans
Methamphetamine use is very common in the US and is associated with serious medical and psychiatric problems. There has also been a significant increase in the number of patients entering treatment for methamphetamine dependence, however, no pharmacologic treatment has been identified as effective in treating methamphetamine addiction. Given that withdrawal from methamphetamine is thought to contribute to relapse to methamphetamine use during early treatment, it is important to examine potential pharmacologic agents for alleviating withdrawal. Thus, this study is designed to study methamphetamine withdrawal in humans. To this end, 30 methamphetamine dependent participants (ages 18-65 years) will be entered into a 4-week residential study. Urine samples will be obtained at baseline to ensure recent methamphetamine use. Intake assessments will include cognitive testing, standardized assessment of depression and anxiety, profile of mood states, methamphetamine selective severity assessment, methamphetamine withdrawal assessment, sleep quality and quantity, a pre-attentional measure and attentional measure. Upon admission to the residential facility, all study participants will be started on (20-30mg) long acting amphetamine/d-amphetamine and stabilized over the first 5 days. After stabilization participants will be randomized based on sex, amphetamine withdrawal questionnaire score, and methamphetamine selective severity assessment score to either continued treatment with amphetamine/d-amphetamine or placebo for 2 weeks. All subjects will then be placed on placebo for the last 7 days. The investigators hypothesis is that stopping amphetamine administration in methamphetamine dependent individuals will negatively impact mood, sleep and cognitive function in a time-limited fashion that may differ depending upon the measure and that attentional, but not pre-attentional, measures will be adversely affected in those receiving placebo compared to those maintained on amphetamine.
- Conditions
- Methamphetamine Dependence
- Being tested
- Dextroamphetamine, Placebo
- Keywords
- methamphetamine withdrawal, mood, retention, sleep
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
DextroamphetamineDrug
Thirty treatment-seeking methamphetamine dependent volunteers will be admitted to a residential facility and be inducted onto d-amphetamine during week 1 of the study. 15 Participants then will be randomized by severity of methamphetamine dependence, sex, amphetamine withdrawal questionnaire score and history of Attention Deficit Hyperactivity Disorder to receive oral d-amphetamine at a dose of 30 mg twice daily for 2 weeks.
PlaceboDrug
Thirty treatment-seeking methamphetamine dependent volunteers will be admitted to a residential facility in this 4-week, double-blind, placebo-controlled, clinical trial and be inducted onto d-amphetamine during week 1 of the study. 15 Participants then will be randomized by severity of methamphetamine dependence, sex, amphetamine withdrawal questionnaire score and history of Attention Deficit Hyperactivity Disorder to receive oral placebo tablets twice daily for 2 week.
| Study group | Role | What they receive |
|---|---|---|
| Dextroamphetamine | Active comparator | Not described Receives: Drug: Dextroamphetamine |
| Placebo | Placebo comparator | Not described Receives: Drug: Placebo |
What is being measured
The primary outcome is the main question the study is designed to answer.
Measure of Methamphetamine Withdrawal
Total score on the Methamphetamine Withdrawal Assessment scale (MAWA) based on DSMIV criteria for amphetamine withdrawal. This questionnaire is comprised of 13 items which describe symptoms associated with the cessation of chronic amphetamine use for which participants indicate severity on a 4-point scale. The minimum score indicating no methamphetamine withdrawal symptoms is 0 and the maximum score is 4 indicating that a patient has the most severe withdrawal symptom related to that question. The subscales are the 13 questions and the total score is the sum of all the scores for the 13 items on the scale. The range minium and better outcome is a lower score. The range is from 0-52. The worse outcome is reflected in a higher score.
Measured: at the end of week 4
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted7 Oct 2010 (estimated)
- Study startOct 2009
- Primary completionApr 2013
- Study completionMay 2014
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Other trials for Methamphetamine DependenceStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
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
- Quadruple blind
- Who is masked
- Participant, Care provider, Investigator, Outcomes assessor
- Enrolment
- 35 participants (actual)
Sponsor and investigators
- Lead sponsor
- University of Arkansas
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01215929
- Sponsor's protocol ID
- 110743
- Status last verified
- Jul 2014
- First submitted
- 1 Oct 2010
- Last updated
- 4 Aug 2014
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- Yes
Study at a glance
From the registry record, last updated by the sponsor on 4 Aug 2014. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Amphetamine Withdrawal Paradigm in Humans
- ClinicalTrials.gov ID
- NCT01215929
- Acronym / sponsor ID
- 110743
- Conditions
- Methamphetamine Dependence
- Keywords
- methamphetamine withdrawal, mood, retention, sleep
- Phase
- Phase 2
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 35 participants (actual)
- Lead sponsor
- University of ArkansasUniversity, hospital or other
- Study start
- Oct 2009
- Primary completion
- Apr 2013 (actual)
- Study completion
- May 2014 (actual)
- First posted
- 7 Oct 2010 (estimated)
- Results
- Posted 4 Aug 2014
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Methamphetamine use is very common in the US and is associated with serious medical and psychiatric problems. There has also been a significant increase in the number of patients entering treatment for methamphetamine dependence, however, no pharmacologic treatment has been identified as effective in treating methamphetamine addiction. Given that withdrawal from methamphetamine is thought to contribute to relapse to methamphetamine use during early treatment, it is important to examine potential pharmacologic agents for alleviating withdrawal. Thus, this study is designed to study methamphetamine withdrawal in humans. To this end, 30 methamphetamine dependent participants (ages 18-65 years) will be entered into a 4-week residential study. Urine samples will be obtained at baseline to ensure recent methamphetamine use. Intake assessments will include cognitive testing, standardized assessment of depression and anxiety, profile of mood states, methamphetamine selective severity assessment, methamphetamine withdrawal assessment, sleep quality and quantity, a pre-attentional measure and attentional measure. Upon admission to the residential facility, all study participants will be started on (20-30mg) long acting amphetamine/d-amphetamine and stabilized over the first 5 days. After stabilization participants will be randomized based on sex, amphetamine withdrawal questionnaire score, and methamphetamine selective severity assessment score to either continued treatment with amphetamine/d-amphetamine or placebo for 2 weeks. All subjects will then be placed on placebo for the last 7 days. The investigators hypothesis is that stopping amphetamine administration in methamphetamine dependent individuals will negatively impact mood, sleep and cognitive function in a time-limited fashion that may differ depending upon the measure and that attentional, but not pre-attentional, measures will be adversely affected in those receiving placebo compared to those maintained on amphetamine.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Quadruple blind (participant, care provider, investigator, outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Dextroamphetamine | Active comparator | Drug: Dextroamphetamine |
| Placebo | Placebo comparator | Drug: Placebo |
Who may qualify
- Ages
- 21 to 65 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (6 listed)
- 21-65 years old
- not currently enrolled in a treatment program
- history of methamphetamine use with recent use confirmed by a positive urine toxicology screen for amphetamines during the month prior to study entry
- self-reported Methamphetamine use on at least 15 of the past 30 days
- use of at least one half gram of methamphetamine per week during the month prior to study entry
Key exclusion criteria (10 listed)
- current diagnosis of alcohol, opiate, or sedative physical dependence
- ill health (e.g., major cardiovascular, renal, endocrine, hepatic disorder)
- history of schizophrenia, or bipolar type I disorder
- present or recent use of over-the-counter or prescription psychoactive drug or drug(s) that would be expected to have major interaction with d-amphetamine
- medical contraindication to receiving study medications (e.g., previous adverse reaction to d-amphetamine)
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| DextroamphetamineThirty treatment-seeking methamphetamine dependent volunteers will be admitted to a residential facility and be inducted onto d-amphetamine during week 1 of the study. 15 Participants then will be randomized by severity of methamphetamine dependence, sex, amphetamine withdrawal questionnaire score and history of Attention Deficit Hyperactivity Disorder to receive oral d-amphetamine at a dose of 30 mg twice daily for 2 weeks. | Drug | Dextroamphetamine |
| PlaceboThirty treatment-seeking methamphetamine dependent volunteers will be admitted to a residential facility in this 4-week, double-blind, placebo-controlled, clinical trial and be inducted onto d-amphetamine during week 1 of the study. 15 Participants then will be randomized by severity of methamphetamine dependence, sex, amphetamine withdrawal questionnaire score and history of Attention Deficit Hyperactivity Disorder to receive oral placebo tablets twice daily for 2 week. | Drug | Placebo |
Primary outcome
Measure of Methamphetamine Withdrawal
Time frame: at the end of week 4
Total score on the Methamphetamine Withdrawal Assessment scale (MAWA) based on DSMIV criteria for amphetamine withdrawal. This questionnaire is comprised of 13 items which describe symptoms associated with the cessation of chronic amphetamine use for which participants indicate severity on a 4-point scale. The minimum score indicating no methamphetamine withdrawal symptoms is 0 and the maximum score is 4 indicating that a patient has the most severe withdrawal symptom related to that question. The subscales are the 13 questions and the total score is the sum of all the scores for the 13 items on the scale. The range minium and better outcome is a lower score. The range is from 0-52. The worse outcome is reflected in a higher score.
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 4 Aug 2014.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 2 study testing Dextroamphetamine in people with Methamphetamine Dependence, run by University of Arkansas 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 6 inclusion and 10 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 4 Aug 2014. 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. 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 4 Aug 2014). 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?
Measure of Methamphetamine Withdrawal (time frame: at the end of week 4). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
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 4 Aug 2014.