Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Combination of Scheduled Reduced Smoking With Varenicline to Enhance Cessation
Brief Summary: This study has three main aims. Aim 1: To provide initial data on the efficacy of combined Scheduled Gradual Reduction (SGR) and Varenicline (VN) for smoking cessation, by assessing abstinence and levels of smoking at 2 time points (4 and 12 weeks post quit). Aim 2: To explore the possibility that SGR+VN will be particularly efficacious among smokers with higher background levels of Cue Reactivity (CR), as assessed at the start of the study, using a classic experimental smoking CR paradigm. Aim 3: To explore possible mechanisms underlying the effects of SGR+VN, by assessing potential mediators (i.e., self-efficacy, cue-induced cravings) of treatment effects.


Options:
A: Inclusion Criteria:

* Subjects must have smoked an average of at least 10 cigarettes per day during the past year and over the month prior to the screening visit, with no period of abstinence greater than 3 months in the past year.

Exclusion Criteria:

* Subjects who have used bupropion, Zyban, or Wellbutrin previously.
B: Inclusion Criteria:

Age: 18-75 years old

• Smoking 5 or more cigarettes, Little cigars and/or cigarillos per day, on average, within the 2 months preceding the screening visit and expired CO ≥ 6ppm (if ≤ 5, then NicAlert Strip \>2).

* Interested in treatment that might change smoking behavior
* Able to follow verbal and written instructions in English and complete all aspects of the study
* Provide informed consent and agree to all assessments and study procedures
* Have an address and telephone number where they may be reached
* Be the only participant in their household

Exclusion Criteria:

Standard criteria for transdermal nicotine and varenicline smoking cessation trials will be used.

Exclusion criteria will include the following:

* Within the month immediately preceding the screening visit, use of any form of tobacco products other than cigarettes, little cigars and/or cigarillos on 3 or more days within a week if the individual refuses to refrain from such tobacco use during the course of the study.
* Current enrollment or plans to enroll in another smoking cessation program in the next 12 months
* Plan to use other nicotine substitutes (i.e., OTC or prescription medication for smoking cessation) or smoking cessation treatments in the next 12 months
* Uncontrolled hypertension (SBP greater than 180 or DBP greater than 110)
* Reports diagnosis of seizure disorder or a history of neurological illness or closed head injury that in the opinion of the PI feels that it would affect the results of the EEG
* History of severe kidney disease (e.g. chronic or acute kidney failure) with creatinine clearance below 30 and/or severe liver disease with liver tests over 4 times the upper normal level.
* Laboratory evaluations (kidney and liver) outside normal limits and of potential clinical significance in the opinion of the investigator
* Serious or unstable disease within the past 3 months
* History (last 3 months) of abnormal heart rhythms, cardiovascular disease (stroke, angina, heart attack) may result in ineligibility. These conditions will be evaluated on a case by case basis by the Study Physician.
* Current use of certain medications: (1) Smoking cessation meds (last 7 days), i.e., Wellbutrin, Bupropion, Zyban, NRT, Chantix, (2) Certain medications to treat depression (last 14 days), i.e.

MAOIs and Elavil (Amitriptyline), (3) A case by case determination will be made by study physician for medication on precautionary list, i.e. nitroglycerin, or (4) Daily use of opioids for 30 days or more on phone screen or at screening is exclusionary however PRN use is allowed (i.e., 3:7 days per week or less or if more frequent, use less than a month's duration.) --Meet criteria for the following psychiatric and/or substance use disorders as assessed by the MINI: items C (current manic or hypomanic episode only), I (alcohol abuse - Alcohol Addendum-past 6 months only; current alcohol dependence), J (substance abuse - Substance Abuse Addendum - past 6 months only; current substance dependence), K (current/lifetime psychotic disorder or current/lifetime mood disorder with psychotic features).

* Individuals who meet criteria for non-exclusionary psychiatric disorders that are considered clinically unstable and/or unsuitable to participate as determined by the Principal Investigator and/or Study Physician.

  * Individuals rated as moderate (9-16) to high (17 or greater) on suicidality as assessed by Module B of the MINI. --Psychiatric hospitalization within 1 year of screening date. --A positive urine pregnancy test during the screening period. Women who are two years postmenopausal, or who have had a tubal ligation or a partial or full hysterectomy will not be subject to a urine pregnancy test. --Pregnant, breast-feeding or of childbearing potential and is not protected by a medically acceptable, effective method of birth control while enrolled in the study. Medically acceptable contraceptives include: (1) approved hormonal contraceptives (such as birth control pills, patches, implants or injections), (2) barrier methods (such as a condom or diaphragm) used with a spermicide, or (3) an intrauterine device (IUD). Contraceptive measures sold for emergency use after unprotected sex are not acceptable methods for routine use. --History of hypersensitivity or allergic reaction to Varenicline, NRT, or any component of these formulations . --Any medical or psychiatric condition, illness, disorder, or concomitant medication that could compromise participant safety or treatment, as determined by the Principal Investigator and/or Study Physician.

    * Subject considered by the investigator as unsuitable candidate for receipt of an investigational drug, or unstable to be followed up throughout the entire duration of the study.
    * Positive toxicology screen for any of the following drugs: cocaine, opiates, methadone, benzodiazepines, barbiturates, amphetamines, methamphetamines, PCP, or THC.

      * A. Participants with valid prescriptions for opiates, benzodiazepines, barbiturates, amphetamines or methadone will not be excluded. B. Participants failing the toxicology screen will be allowed to re-screen once. If they test positive again, they will not be allowed to return.
    * Must not have visual problems that in the investigators opinion would interfere in the completion of the study assessments
    * Unwilling to change hairstyle or remove a wig as necessary for the appointment to accommodate the net that is required to be worn on the scalp during the study procedure.
C: Inclusion Criteria:

* Age 21-65
* Smoke \>9 cigarettes per day for at least 1 year
* Smoke regular filtered cigarettes or machine-rolled cigarettes with a filter
* CO measurement \>9 ppm at baseline
* No serious quit attempt in the prior 1 month. This includes use of any FDA approved smoking cessation medication (varenicline, bupropion \[used specifically as a quitting aid\], patch, gum, lozenge, inhaler, and nasal spray) in the past 1 month as an indication of treatment seeking.
* Not planning to quit in the next 6 months
* Interested in reducing cigarette consumption
* Willing to attend visits weekly and monthly over a 9-month period (not planning to move, not planning extended vacation, no planned surgeries)
* Read and write in English
* Able to understand and consent

Exclusion Criteria:

* Pregnant and/or nursing women
* Unstable or significant medical condition in the past 12 months (Recent heart attack or some other heart conditions, stroke, severe angina including high blood pressure if systolic \>159 or diastolic \>99 observed during screening).
* Immune system disorders, respiratory diseases (exacerbations of asthma or COPD, require oxygen, require oral prednisone), kidney (dialysis) or liver diseases (cirrhosis), or any medical disorder/medication that may affect participant safety or biomarker data.
* Use of any non-cigarette nicotine delivery product (pipe, cigar, dip, chew, snus, hookah, ECIGs, strips, sticks) in the past 7 days
* Uncontrolled mental illness or substance abuse or inpatient treatment for these in the past 6 months
* History of difficulty providing or unwilling to provide blood samples (fainting, poor veins, anxiety)
* No surgery requiring general anesthesia in the past 6 weeks
* Use of an ECIG for 5 or more days in the past 28 days or any use in the past 7 days
* Use of marijuana or any illicit drug/prescription drugs for non-medical use daily/almost daily, or weekly in the past 3 months per NIDA Quick Screen
* Use of hand-rolled, roll your own cigarettes
* Known allergy to propylene glycol or vegetable glycerin
* Other member of household is currently participating/participated in the study
D: Inclusion Criteria:

* Current cigarette smoker
* Averages at least 10 cigarettes/day for 5 or more years
* DSM-IV diagnosis of Nicotine Dependence
* Breath carbon monoxide \> 6 ppm
* Motivated to quit: score \> 8 on Contemplation Ladder
* Age \> 18 years

Exclusion Criteria:

* Current illicit substance use
* Other tobacco use (e.g., cigar, pipe)
* History of psychosis
* Past or current cardiovascular disease
* Impaired renal functioning
* Pregnancy
* Nursing
* Current treatment for smoking cessation
* Clinically significant depressive symptoms (CES-D \> 16)
* Current suicidal ideation

Answer: D