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Nicotine DependencePhase 2NCT01188967

Effectiveness of GSK598809, a Selective D3 Antagonist, Added to CBT and NRT for Smoking Cessation and Relapse Prevention

A Phase 2 study testing GSK598809 in people with Nicotine Dependence, run by Massachusetts General Hospital 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 research study is to find out if an investigational drug, GSK598809 can help people who have very recently quit smoking; the investigators want to find out if continuing to take GSK598809 over six weeks can help prevent smokers from relapsing. Read more about this study

Who is it for?
Ages 18 to 65 years
Conditions the study is for
Nicotine Dependence
What is being tested?
GSK598809
Type of treatment
Pill or oral medicine
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
84 participants
Where
1 siteUnited States
Study dates
Aug 2010to May 2013
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

None listed.

Who cannot join

  • Pregnant or able to become pregnant and not willing to use approved contraception.
  • Breastfeeding or planning to breastfeed during the study or lactating within the month prior to enrollment.
  • Has any of the following medical conditions/situations:
  • Severe or unstable COPD or Asthma Bundle branch block Evidence of active neurological disease, including current migraine headaches requiring chronic treatment.
  • Clinically significant renal dysfunction eGFR <60 History of any tissue/organ transplant Total fasting cholesterol or triglycerides greater than 2 times the upper limit of normal Previous or current history of cancer, including skin cancer Serum Prolactin > 25 ng/mL at the time of screening or randomization Evidence of chronic liver disease or ALT, AST, or alkaline phosphatase values >1.5 times the upper limit of normal, total bilirubin values > the upper limit of normal, or history of severe hepatobiliary disease (e.g. hepatitis B or C, or cirrhosis, Child-Pugh Class B/C) Positive screening Hepatitis B surface antigen or Hepatitis C antibody, or positive result within 3 months of screening A positive test for HIV antibody Any other unstable cardiovascular or pulmonary disease, or medication for said diseases has been changed in the past 3 months, or the medication is listed on the excluded medications list.
  • Is unlikely to cooperate or unable to follow all of the procedures outlined in the protocol
Show all 24Show fewer
  • Use of tobacco-containing products other than cigarettes (e.g., cigar, pipe) and unwilling to discontinue use of these on the quit date.
  • Abuse or dependence of any substance other than nicotine or caffeine in the past 6 months.
  • Diagnosis of major depressive disorder in the past 6 months.
  • Lifetime DSM-IV diagnosis of organic mental disorder, schizophrenia, schizoaffective disorder, bipolar disorder, delusional disorder or psychotic disorders not elsewhere classified as determined by SCID.
  • History of multiple adverse drug reactions.
  • Has participated in a clinical trial and has received an investigational product within the following time period prior to the first dosing day in the current study: 30 days, 5 half-lives or twice the duration of the biological effect of the investigational product (whichever is longer).
  • Urine positive for drugs of abuse at screening and any pre-randomization visit.
  • Alcohol abuse, defined as self-report of an average weekly intake of > 21 standard drinks or an average daily intake of >3 standard drinks (males) or an average weekly intake of >14 standard drinks or an average daily intake of >2 standard drinks (females) in the past 6 months. One unit is equivalent to a half-pint (220mL) of beer or one (25mL) measure of spirits or one glass (125mL) of wine. Participants will be advised to minimize alcohol consumption during the study, as there may be the potential for additive effects of study medication and alcohol, potentially causing greater sedation and feeling of intoxication than alcohol alone.
  • Has been exposed to more than four new chemical entities within 12 months prior to the first day of the double-blind treatment phase.
  • Has used non-prescription drugs or herbal medicines that are centrally active within 14 days prior to the first dosing day, with the exception of non-daily PRN use of acetaminophen or ibuprofen and daily use of vitamins.
  • Has ever used chronic antipsychotic, anti-epileptic, or mood stabilizing medication; has used anti-anxiety medication, antidepressant medication, or prescription sedatives or hypnotics within 5 half lives or two weeks of randomization, whichever is greater.
  • Has a history of sensitivity to any of the study medications, or components thereof or a history of drug or other allergy that, in the opinion of the investigator makes participation contraindicated.
  • Has donated blood such that participation in the study would result in donation of blood or blood products in excess of 500 ml within a 56-day period.
  • Has a failed smoking cessation attempt using adequate smoking cessation pharmacotherapy within the last month.
  • Current Axis II DSM-IV diagnosis that may interfere with the conduct of the study.
  • Personal or family history of long QT syndrome, personal or family history of unexplained syncope, or family history of unexplained sudden death.
  • Currently using, or have used within the month prior to study start, any drug that can cause prolongation of the QT interval.
  • Currently using any HMG CoA Reductase Inhibitor.

Trial locations and contacts

1 site in 1 country.

United States1 site
  • Massachusetts General Hospital

    Boston, Massachusetts, 02114

Other trials in United States

About this study

Official title: A Double-Blind, Placebo-Controlled, Parallel Group Design Trial of the Selective D3 Antagonist, GSK598809, Added to CBT and NRT for Smoking Cessation and Prevention of Very Early Relapse to Smoking

The purpose of this research study is to find out if an investigational drug, GSK598809 can help people who have very recently quit smoking; the investigators want to find out if continuing to take GSK598809 over six weeks can help prevent smokers from relapsing. To relapse means you "fall back" into smoking again after quitting. The investigators also want to find out if GSK598809 is safe to take without causing too many side effects.

Read the detailed description

We propose to conduct a first test of the effect of the dopamine D3 receptor antagonist, GSK598809, on smoking behavior when treatment is started immediately following the quit date. To do this, we propose to conduct a 10-week, double-blind, placebo-controlled, proof of mechanism study in 90 adult smokers. Participants will complete baseline evaluations. They will receive manualized cognitive behavioral therapy, beginning prior to the quit date, and will set a quit date for the day before their week 2 study visit. They will be given short acting NRT (gum or lozenge) to use on their quit date. They will be asked to arrive for the week 2 visit with 18-24 hours abstinence and an expired air CO ≤ 10ppm. Those who do so will be randomly assigned to receive double blind GSK598809 or identical placebo for six weeks. Participants will begin double blind GSK598809 or placebo, both in conjunction with prn NRT up to 8 mg per day for two weeks. Participants will then continue double blind GSK598809 or placebo in the absence of NRT for 4 more weeks. At the end of this period (week 8 of the study), participants will then be followed 2 weeks after discontinuation of double blind treatment to complete the 10 weeks of the study.

Being tested
GSK598809, Placebo
Keywords
Drugs, Investigational, Nicotine Dependence, Therapies for Relapse to Nicotine, Relapse Prevention, Smoking Cessation, Nicotine Cessation Therapies
Medical subject headings
Tobacco Use Disorder, Smoking Cessation

What participants receive

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

  • GSK598809Drug

    Oral dose of 60 mg/day for a treatment period six weeks

  • PlaceboDrug

    Placebo

Study groups in NCT01188967
Study groupRoleWhat they receive
GSK598809ExperimentalActive medication
Receives: Drug: GSK598809
PlaceboPlacebo comparatorPlacebo
Receives: Drug: Placebo

What is being measured

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

  1. 4-week, Continuous Tobacco Abstinence at the End of the 6-week, Double Blind, Treatment Phase

    The hypothesis is that those assigned to GSK598809 will demonstrate a higher rate of biochemically-verified, 4-week, continuous tobacco abstinence than those assigned to identical placebo at the end of the 6-week, double blind, treatment phase. Four-week continuous abstinence will be defined as Timeline Followback Calendar confirmation at study visit of smoking no cigarettes in the past 7 days, and expired air CO<10ppm for 4 consecutive weeks (the last 4 weeks of the randomized phase)

    Measured: Week 8 of the study

Secondary outcomes (3)
  1. 7-day, Point-prevalence Tobacco Abstinence at the End of the First Week of Exposure to GSK598809/Placebo

    The hypothesis is that those assigned to GSK598809 will demonstrate a higher rate of biochemically-verified, 7-day, point-prevalence tobacco abstinence than those assigned to identical placebo at the end of the first week of exposure to GSK598809/placebo.

    Measured: Week 3 of the study

  2. 7-day, Point-prevalence Tobacco Abstinence at the End of 6 Weeks Exposure to GSK598809/Placebo

    The hypothesis is that those assigned to GSK598809 will demonstrate a higher rate of biochemically-verified, 7-day, point-prevalence tobacco abstinence than those assigned to identical placebo at the end of 6 weeks exposure to GSK598809/placebo.

    Measured: Week 8 of the study

  3. Number of Participants With 7-day, Point-prevalence Tobacco Abstinence 2-weeks After Discontinuation of Double Blind Study Medications

    The hypothesis is that those assigned to GSK598809 will demonstrate a higher rate of biochemically-verified, 7-day, point-prevalence tobacco abstinence than those assigned to identical placebo two weeks after discontinuation of double blind study medications.

    7-day, Point-prevalence tobacco abstinence was defined as not smoking for the 7 consecutive days before this visit after discontinuation of double blind study medications

    Measured: Week 10 of the study

Timeline

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

  1. First posted26 Aug 2010 (estimated)
  2. Study startAug 2010
  3. Primary completionMay 2013
  4. Study completionMay 2013

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
Prevention
Allocation
Randomised
Intervention model
Parallel groups
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
84 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT01188967
Sponsor's protocol ID
NIDA-19378-5
Other IDs
U01DA019378
Status last verified
Jan 2017
First submitted
5 Aug 2010
Last updated
23 Feb 2017
Data monitoring committee
Yes

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing GSK598809 in people with Nicotine Dependence, run by Massachusetts General Hospital 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 0 inclusion and 24 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 23 Feb 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. 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 9 Jan 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?

4-week, Continuous Tobacco Abstinence at the End of the 6-week, Double Blind, Treatment Phase (time frame: Week 8 of the study). 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 23 Feb 2017.

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