ClinicalTrials.gg
CompletedNCT03416621Updated Mar 29, 2021Results posted

Project Q Pilot: Smoking Cessation for Light Smokers

A Phase 3 interventional study of Cognitive behavioral cessation counseling and Counseling and placebo drug intervention in Tobacco Use Cessation, sponsored by Duke University. Completed at 1 site in United States. Open to participants aged 18 Years to 65 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2021-03-29.

Sponsored by Duke University · Phase 3, Interventional, and Prevention

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Phase
Phase 3
Study type
Interventional
Enrollment
31
Allocation
Randomized
Ages
18 Years to 65 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-13

Among 190 studies in Tobacco Use Cessation with a site in United States — 30 open to participants now, 41 under way, 2 of them phase 3. Tobacco Use Cessation · United States.

Enrollment
166th of 184
31 · median 213
Started
2018
with 7 others
Phase 3
18 of 190
1 open now
Registered
110th of 190
by date
Lead sponsor
7 of 190
Duke University

Among the 190 studies in Tobacco Use Cessation with a site in United States, this one is the 166th largest by enrollment of the 184 interventional ones that give a count, is one of 8 that started in 2018, is one of 18 in phase 3, and was the 110th registered.

Tobacco Use Cessation

276 studies on the registry are indexed under Tobacco Use Cessation; 45 are open to participants now.

Browse Tobacco Use Cessation studies →

Open to participants now

30 of the 190 studies in Tobacco Use Cessation with a site in United States are open now. Recruiting first, the newest first:

25 more — sign in →

All 30 open studies →

A study can be open while its sites in United States have not opened yet or have stopped. Only those recruiting at a site in United States →

Who these studies take

Of the 23 Tobacco Use Cessation studies recruiting now, 16 (70%) set no upper age limit and 6 (26%) stop at 75 or younger; 1 takes children under 18; 9 take healthy volunteers.

This study: 18 Years to 65 Years · all sexes · healthy volunteers too.

The full table on the hub →

This tab as a report to print or save as PDF → With an account.

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Watch this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 190 studies in Tobacco Use Cessation with a site in United States, or all of them as a file.
02

Study summary

The purpose of this pilot study is to evaluate the feasibility, acceptability, and preliminary efficacy of an intervention to promote smoking cessation among light smokers.

Read the detailed description

The three-arm randomized controlled trial compares Arm 1) standard smoking cessation plus support text messages, 2) enhanced cue exposure treatment (lab-based + interactive SMS texting) + D-cycloserine placebo, Arm 3)will include a combination of cognitive behavioral cessation counseling, enhanced cue exposure treatment (lab-based + interactive SMS texting) and a cognitive-enhancing drug - D-cycloserine. In addition to an in-person screening visit, we will conduct three in-person treatment visits and an inperson follow-up visit.

03

Conditions studied

  • Tobacco Use Cessation

Browse trials for

Keywords

  • Light Smoker
04

Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Age: ≥18 years old
  • Able to read and understand English or Spanish
  • Cognitively able to provide
  • Smoke 1-10 cigs/day on at least 4 days in the past month
  • Express a desire to quit smoking in the next 30 days
  • Access to a cell phone that can send and receive SMS text messages and take and send pictures

Exclusion criteria

Exclusion Criteria:

  • Hypertension with a screening blood pressure over 160/100;
  • Hypotension with a screening blood pressure of systolic \<90 mm Hg, diastolic \<60 mm Hg;
  • Participants with a history of hypertension may be allowed to participate in the study if the study physician or physician assistant determines that the condition is stable, controlled by medication, and in no way jeopardizes the individual's safety;
  • Coronary heart disease, diagnosed by coronary angiogram;
  • History of major heart attack;
  • Major cardiac rhythm disorder determined by study MD;
  • Chest pain in the last month (unless history, exam, indicate a non-cardiac source);
  • Symptomatic cardiac disorder (valvular heart disease, heart murmur, heart failure);
  • Diagnosis of severe liver disease or kidney disorder;
  • Major gastrointestinal problems or disease (Celiac, Crohn's, Ulcerative Colitis)
  • Bleeding ulcers in the past 30 days;
  • Current, advanced lung disorder/disease (, emphysema);
  • Migraine headaches that occur more frequently than once per week;
  • Recent, unexplained fainting spells;
  • Problems giving blood samples;
  • Diabetes not controlled by diet and exercise alone;
  • Current cancer or cancer treatment in the past six months (except basal or squamous cell skin cancer);
  • , , or ;
  • History of Tuberculosis or recent positive PPD;
  • Other major medical condition;
  • Current symptomatic, uncontrolled psychiatric disease;
  • Diagnosis of serious mental illness, including bipolar disorder and schizophrenia;
  • Suicidal ideation within the past month or lifetime occurrence of attempted suicide;
  • Current (within 2 weeks) depression determined by PHQ-9 score > 9 or > 0 on item #9
  • Bulimia or anorexia;
  • Pregnant or nursing;
  • Use (within the past 30 days) of:
  • Illegal drugs (or if the urine drug screen is positive for Cocaine, Amphetamine, Opiates, Methamphetamines, PCP, Benzodiazepines, or Barbiturates), unless prescribed for management of acute symptoms (tooth extraction, recent surgery);
  • Experimental () drugs;
  • Psychiatric medications including antidepressants (MAOIs, St. John's Wort), lithium, anti-psychotics, or any other medications that are known to affect smoking cessation (e.g. clonidine);
  • Wellbutrin, bupropion, Zyban, Chantix, varenicline, nicotine patch, nicotine replacement therapy or any other smoking cessation aid.
  • Use of cigars, cigarillos, pipes, Hookah, dissolvable nicotine, snuff, chewing tobacco , or e-cigarettes within the past 30 days;
  • Positive result on AUDIT-C;
  • Self-report of marijuana use ≥ 4 days per week;
  • Significant adverse reaction to D-cycloserine in the past;
  • Current or recent (in the past 30 days) participation in another smoking study at our Center or another research facility
Terms in these criteria, in plain language(6)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

COPD

Chronic obstructive pulmonary disease: long-term lung disease that makes it hard to breathe out, including emphysema and chronic bronchitis.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

Hepatitis B tests

Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.

Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.

Hepatitis C tests

Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.

After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

05

Study design

Phase
Phase 3
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Care provider)
Enrollment
31 participants (actual)

Study arms

  • Active comparator
    Experimental: Cognitive behavioral cessation counseling

    Standard smoking cessation plus support text messages

    Behavioral: Cognitive behavioral cessation counseling

  • Placebo comparator
    Placebo Comparator: Counseling and placebo drug intervention

    enhanced cue exposure treatment (lab-based + interactive SMS texting) + DCS placebo

    Behavioral: Cognitive behavioral cessation counseling · Behavioral: Counseling and placebo drug intervention

  • Experimental
    Active Comparator: Counseling and active drug intervention

    enhanced cue exposure treatment (lab-based + interactive SMS texting) + active DCS. In addition to an in-person screening visit, we will conduct three in-person treatment visits and an in-person follow-up visit.

    Behavioral: Cognitive behavioral cessation counseling · Drug: Counseling and active drug intervention

Interventions

  • BehavioralCognitive behavioral cessation counseling

    Standard smoking cessation plus support text messages

  • BehavioralCounseling and placebo drug intervention

    Enhanced cue exposure treatment (lab-based + interactive SMS texting) + DCS placebo

  • DrugCounseling and active drug intervention

    Enhanced cue exposure treatment (lab-based + interactive SMS texting)+ active DCS. In addition to an in-person, screening visit, we will conduct three in-person treatment visits and an in-person follow-up visit.

06

What researchers measure

Primary outcomes

  1. Number of Participants With Completion of at Least 2 Study Visits

    Feasibility will be determined by number of participants that complete at least 2 study visits.

    Time frame: Approximately 8 weeks

  2. Number of Participants Who Rated the Intervention Acceptable

    Acceptability will be determined by the number of patients rating the intervention usefulness in the experimental and control arms on a 7-point Likert scale, where 1=extremely useless and 7=extremely useful.

    Time frame: Approximately 8 weeks

Secondary outcomes

  1. Number of Participants With Validated Cessation

    Biochemically-validated cessation (absence of salivary cotinine) 1 week post-intervention.

    Time frame: 1 week post-intervention

07

Results

Posted Feb 24, 2021
Limitations and caveats
Findings are not conclusive due to the pilot nature of the study.

Participant flow

Participant flow — Overall Study
MilestoneExperimental: Cognitive Behavioral Cessation CounselingPlacebo Comparator: Counseling and Placebo Drug InterventionActive Comparator: Counseling and Active Drug Intervention
Started13126
Completed13111
Not completed015

Outcome measures

PrimaryNumber of Participants With Completion of at Least 2 Study Visits

Feasibility will be determined by number of participants that complete at least 2 study visits.

Time frame:
Approximately 8 weeks
Reported as:
Count of participants · Participants
Number of Participants With Completion of at Least 2 Study Visits
ParticipantsExperimental: Cue-based TreatmentControl: Standard CounselingActive Comparator: Counseling and Active Drug Intervention
Number of Participants With Completion of at Least 2 Study Visits1071
PrimaryNumber of Participants Who Rated the Intervention Acceptable

Acceptability will be determined by the number of patients rating the intervention usefulness in the experimental and control arms on a 7-point Likert scale, where 1=extremely useless and 7=extremely useful.

Time frame:
Approximately 8 weeks
Reported as:
Count of participants · Participants
Number of Participants Who Rated the Intervention Acceptable
ParticipantsTotal
Number of Participants Who Rated the Intervention Acceptable23
SecondaryNumber of Participants With Validated Cessation

Biochemically-validated cessation (absence of salivary cotinine) 1 week post-intervention.

Time frame:
1 week post-intervention
Reported as:
Count of participants · Participants
Number of Participants With Validated Cessation
ParticipantsExperimental: Cue-based TreatmentControl: Standard CounselingActive Comparator: Counseling and Active Drug Intervention
Number of Participants With Validated Cessation200

Adverse events

Collected over 2 months. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Experimental: Cognitive Behavioral Cessation Counseling0/13 (0%)0/13 (0%)0/13 (0%)
Placebo Comparator: Counseling and Placebo Drug Intervention0/12 (0%)0/12 (0%)0/12 (0%)
Active Comparator: Counseling and Active Drug Intervention0/6 (0%)0/6 (0%)0/6 (0%)

Baseline characteristics

In the comparator standard counseling, one enrolled patient withdrew prior to completing the baseline survey. Three participants in the active comparator arm did not complete the baseline survey.

Age, Continuous
Age, Continuous(years)Experimental: Cue-based TreatmentComparator: Standard CounselingActive Comparator: Counseling and Active Drug InterventionTotal
Mean42.3 ± 14.844.2 ± 18.443 ± 2443.2 ± 16.2
Sex: Female, Male
Sex: Female, Male(Participants)Experimental: Cue-based TreatmentComparator: Standard CounselingActive Comparator: Counseling and Active Drug InterventionTotal
Female108119
Male3328
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)Experimental: Cue-based TreatmentComparator: Standard CounselingActive Comparator: Counseling and Active Drug InterventionTotal
Hispanic or Latino2002
Not Hispanic or Latino1110324
Unknown or Not Reported0101
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Experimental: Cue-based TreatmentComparator: Standard CounselingActive Comparator: Counseling and Active Drug InterventionTotal
American Indian or Alaska Native0000
Asian0000
Native Hawaiian or Other Pacific Islander0000
Black or African American87217
White3418
More than one race1001
Unknown or Not Reported1001
Education: Some college or college grad
Education: Some college or college grad(Participants)Experimental: Cue-based TreatmentComparator: Standard CounselingActive Comparator: Counseling and Active Drug InterventionTotal
Count of participants89320
Employment status: Employed
Employment status: Employed(Participants)Experimental: Cue-based TreatmentComparator: Standard CounselingActive Comparator: Counseling and Active Drug InterventionTotal
Count of participants35210
Type of smoker
Type of smoker(Participants)Experimental: Cue-based TreatmentComparator: Standard CounselingActive Comparator: Counseling and Active Drug InterventionTotal
Daily1211326
Intermittent1001
Cigarettes per day
Cigarettes per day(cigarettes per day)Experimental: Cue-based TreatmentComparator: Standard CounselingActive Comparator: Counseling and Active Drug InterventionTotal
Mean5.8 ± 2.56.5 ± 2.07 ± 3.66.1 ± 2.2

2 further baseline measures are reported on the registry.

08

Study locations

1 site
  • Duke University Medical Center - Cancer Prevention, Detection and Control
    Durham, North Carolina 27710, United States
09

References and documents

Publications

  • Pollak KI, Oliver JA, Pieper C, Davis JM, Gao X, Noonan D, Kennedy D, Granados I, Fish LJ. Cue-based treatment for light smokers: A proof of concept pilot. Addict Behav. 2021 Mar;114:106717. doi: 10.1016/j.addbeh.2020.106717. Epub 2020 Oct 17. PubMed 33109394 ↗

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: No

10

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from May 2018 to primary completion in Feb 2020, 21 months.

Results were first posted in Feb 2021, 11 months after primary completion.

How these figures are worked out, and which studies are left out of them.

Registered
Jan 24, 2018
First posted
Jan 31, 2018
StartActual
May 17, 2018
Primary completionActual
Feb 29, 2020
CompletionActual
Feb 29, 2020
Results first posted
Feb 24, 2021
Last update
Mar 29, 2021
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Mar 29, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT03416621
Lead sponsor
Duke University
Responsible party
Sponsor
First posted
Jan 31, 2018
Start date
May 17, 2018
Primary completion
Feb 29, 2020
Completion
Feb 29, 2020
Results posted
Feb 24, 2021
Last update
Mar 29, 2021

Study contacts

Kathryn Pollak, PhD
principal investigator · Duke University

Oversight

Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Mar 2021. You cannot join it, but the record below documents what was studied.

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