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CompletedNCT01228175VareniclineUpdated May 9, 2018Results posted

Effectiveness of Varenicline: Testing Individual Differences

A Phase 4 interventional study of Placebo and Varenicline in Smoking Addiction, sponsored by The Mind Research Network. Completed at 1 site in United States. Open to participants aged 18 Years to 55 Years. Per ClinicalTrials.gov, last updated 2018-05-09.

Sponsored by The Mind Research Network · Phase 4, Interventional, and Treatment

Phase
Phase 4
Study type
Interventional
Enrollment
218
Allocation
Randomized
Ages
18 Years to 55 Years
Sex
All
01

Study summary

The study will evaluate the effectiveness of smoking cessation using Varenicline versus placebo. Effectiveness will be measured by the average number of cigarettes smoked per smoking day for up to 36 weeks.

02

Conditions studied

  • Smoking Addiction

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03

In context

Behavior, Addictive

540 studies on the registry are indexed under Behavior, Addictive; 134 are open to participants now.

This study's enrollment of 218 is above the median of 72 across 391 interventional studies indexed under Behavior, Addictive.

Browse Behavior, Addictive studies →

Lead sponsor

The Mind Research Network is the lead sponsor of 17 studies on the registry; 5 are open to participants now.

Of its 5 completed or terminated interventional studies of FDA-regulated products, 4 (80%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 55 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • 18 yrs to 55 yrs
  • smoker

Exclusion criteria

Exclusion Criteria:

  • Medical Contraindications
05

Study design

Phase
Phase 4
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Triple (Participant, Care provider, Outcomes assessor)
Enrollment
218 participants (actual)

Study arms

  • Active comparator
    Varenicline

    Varenicline

    Drug: Varenicline

  • Placebo comparator
    Microcrystal Cellulose

    Microcrystal cellulose placebo

    Drug: Placebo

Interventions

  • DrugPlacebo

    25mg look alike riboflavin tablets to match active study medication.

    Also known as: riboflavin

  • DrugVarenicline

    Days 1-3 - .5mg tablet 1xdaily Days 4-7 - .5mg tablet 2xdaily Days 8-84 - 1mg tablet 2xdaily

    Also known as: Chantix

06

What researchers measure

Primary outcomes

  1. Cigarettes Per Smoking Day

    The number of cigarettes smoked were assessed only on a "smoking day", i.e., when a participant smoked at least 1 cigarette. Data was recorded each day for up to 36 weeks.

    Time frame: up to 36 weeks

07

Results

Posted Nov 4, 2016

Participant flow

Participant flow — Overall Study
MilestoneVareniclineMicrocrystal Cellulose
Started11999
Completed5346
Not completed6653
Withdrew: Lost to follow-up6450
Withdrew: Withdrawal by subject12
Withdrew: Physician decision11

Outcome measures

PrimaryCigarettes Per Smoking Day

The number of cigarettes smoked were assessed only on a "smoking day", i.e., when a participant smoked at least 1 cigarette. Data was recorded each day for up to 36 weeks.

Time frame:
up to 36 weeks
Reported as:
Mean · Cigarettes per smoking day
Cigarettes Per Smoking Day
Cigarettes per smoking dayVareniclineMicrocrystal Cellulose
Cigarettes Per Smoking Day4.9256 ± 5.623578.4989 ± 8.53172

Adverse events

Non-serious events are listed at a 1% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Varenicline—0/119 (0%)0/119 (0%)
Microcrystal Cellulose—0/99 (0%)0/99 (0%)

Baseline characteristics

Age, Categorical
Age, Categorical(Participants)VareniclineMicrocrystal CelluloseTotal
<=18 years000
Between 18 and 65 years11999218
>=65 years000
Sex: Female, Male
Sex: Female, Male(Participants)VareniclineMicrocrystal CelluloseTotal
Female8164145
Male383573
Region of Enrollment
Region of Enrollment(Participants)VareniclineMicrocrystal CelluloseTotal
United States11999218
08

Study locations

1 site
  • The Mind Research Network
    Albuquerque, New Mexico 87106, United States
09

References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 9, 2018, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT01228175
Lead sponsor
The Mind Research Network
Collaborators
National Institute on Drug Abuse (NIDA)
Responsible party
Kent Hutchison, Ph.D. (Chief Science Officer, The Mind Research Network) — Principal investigator
First posted
Oct 26, 2010
Start date
Mar 2010
Primary completion
Feb 2015
Completion
Mar 2016
Results posted
Nov 4, 2016
Last update
May 9, 2018

Study contacts

Kent Hutchison, Ph.D
principal investigator · Director, Neurogenetics Core, The Mind Research Network

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Apr 2018. You cannot join it, but the record below documents what was studied.

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