Clinical trial NCT03557294: Varenicline OTC Trial on Efficacy and Safety
Official title: Varenicline OTC Trial on Efficacy and Safety
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: PHASE4
Conditions: Tobacco Dependence
Withdrawal Symptoms
Smoking Cessation
Lead sponsor: Arizona State University
Sponsor class: OTHER
Collaborators: name: National Institute on Drug Abuse (NIDA)
name: Los Angeles Clinical Trials
name: University of Nevada, Reno
name: Pfizer
First posted: 2018-06-15
Enrollment: 313
Sex: ALL
Minimum age (years): 21
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: TREATMENT

Brief summary: The primary goal of the proposed research is to test whether varenicline (Chantix) is safe and effective as an over-the-counter (OTC) medication.

Detailed description: Given the recent research on varenicline showing that it is more effective than nicotine patch and bupropion, and with the removal of the box warning, research is needed to assess whether smokers can use varenicline without a prescription and formal behavioral support. To test this, the primary goal of the proposed research is to test whether varenicline is a candidate for switching from prescription (Rx) to OTC, and whether a dose lower than that currently approved is as effective in an OTC environment. To understand the within-person mechanisms explaining how and when OTC varenicline might improve cessation outcomes, the investigators also propose to assess experience with OTC varenicline via (a) ecological momentary assessment (EMA).

Primary Objectives:

1. To assess the safety and effectiveness of the current FDA-approved 1 mg b.i.d. varenicline for smoking cessation in comparison with placebo when used in a simulated OTC study condition.
2. To assess the safety and effectiveness of .5mg b.i.d. varenicline in comparison with 1mg b.i.d. varenicline and placebo when used in a simulated OTC study condition.

Eligibility criteria: Inclusion Criteria for the In-person Cohort

1. 21 years of age or older
2. Self-reported daily smoker
3. Breath CO \> 10ppm
4. Motivated to quit smoking completely within five weeks of the Screening Visit (\>5 on reported motivation)
5. Capable of and agree to complete study requirements
6. Literate in English, self-report
7. Must be available for the duration of study
8. Informed consent obtained
9. Willing and able to provide additional data between visits using ecological momentary assessment (EMA)
10. Must own study compatible smart-phone (iPhone or Android)

Exclusion Criteria for the In-person Cohort

1. Any self-report, diagnosis or treatment of heart attack, unstable angina, angioedema, seizures, cerebrovascular accident (CVA) within the last six months.
2. Any self-report, diagnosis or treatment of bipolar, schizophrenia or suicidal ideation within the last six months. (For suicidal ideation a score of ≥7 on the Suicidal Behavior Questionnaire, see Appendix 15)
3. Self-report of diagnosis or treatment for depression within the past six months, unless participant has written permission by their healthcare provider to participate
4. Systolic blood pressure 160 or higher and/or diastolic blood pressure 100 or higher (see site applicable SOP for Evaluating and Reporting Blood Pressure and Appendices 5 and 6 for participant handouts)
5. History of renal disease
6. Allergy to any of the ingredients in varenicline
7. Participation in another smoking cessation program or any type of clinical trial in the past 3 months
8. Use of any smoking cessation medication in the past three months
9. Any other medical condition(s) which the licensed study physician deems unacceptable for participation in this study
10. Positive drug screen indicating possible substance abuse (eg opiates, amphetamines, benzodiazepines, cocaine or other substances), unless participant can show that the medication has been prescribed by licensed clinical provider.
11. Consume greater than 21 alcohol drinks per week.
12. No two members of the same household may participate in this study
13. No study staff or their immediate family may participate in the study
14. Females who are pregnant, breast feeding, or not currently using a medically approved form of birth control and unwilling to do so.

Acceptable methods of birth control include abstinence, oral contraceptives, the contraceptive patch, the contraceptive ring, and condoms.

Inclusion Criteria for the Remote Cohort

1. 21 years of age or older
2. Self-reported daily smoker
3. Positive cotinine from urine sample
4. Motivated to quit smoking completely within five weeks of the Screening Visit (\>5 on reported motivation)
5. Capable of and agree to complete study requirements
6. Literate in English, self-report
7. Must be available for the duration of study
8. Informed consent obtained

10. Must own study compatible smart-phone (iPhone or Android) 11. Must be a current resident of the United States

Exclusion Criteria for the Remote Cohort

1. Any self-report, diagnosis or treatment of heart attack, unstable angina, angioedema, seizures, cerebrovascular accident (CVA) within the last six months.
2. Any self-report, diagnosis or treatment of bipolar, schizophrenia or suicidal ideation within the last six months. (For suicidal ideation a score of ≥7 on the Suicidal Behavior Questionnaire, see Appendix 15)
3. Self-report of diagnosis or treatment for depression within the past six months, unless participant has written permission by their healthcare provider to participate
4. History of renal disease
5. Allergy to any of the ingredients in varenicline
6. Participation in another smoking cessation program or any type of clinical trial in the past 3 months
7. Use of any smoking cessation medication in the past three months
8. Any other medical condition(s) which the licensed study physician deems unacceptable for participation in this study
9. Consume greater than 21 alcohol drinks per week.
10. No two members of the same household may participate in this study
11. No study staff or their immediate family may participate in the study
12. Females who are pregnant, breast feeding, or not currently using a medically approved form of birth control and unwilling to do so.

Acceptable methods of birth control include abstinence, oral contraceptives, the contraceptive patch, the contraceptive ring, and condoms.

Primary outcomes:
measure: The Number of Participants Who Have Continuous Abstinence as Verified by Breath Carbon Monoxide or Urine Cotinine
timeFrame: Week 12
Secondary outcomes:
measure: Breath Carbon Monoxide or Urine Cotinine Verified Abstinence From Smoking Cigarettes - Point Prevalence Abstinence
timeFrame: Week 12 visit
measure: Breath Carbon Monoxide Verified Abstinence From Smoking Cigarettes
timeFrame: Week 26
Other outcomes:
Locations:
city: Phoenix
country: United States
facility: Arizona State University
state: Arizona
city: Burbank
country: United States
facility: Los Angeles Clinical Trials
state: California
Study officials:
References: