Please select the eligibility criteria that correspond to the clinical trial below.
Title: Varenicline for Cognitive Deficits and Cigarette Smoking in Schizophrenia - Efficacy and Predictors, Independent Investigator Study
Brief Summary: This is a 8-week double-blind placebo controlled parallel group study of the efficacy of varenicline (Chantix) for smoking cessation in schizophrenic patients, and its effect on cognitive function in patients with schizophrenia.At some sits evaluation of smoking measures is extended to 12 weeks. Correlations will be made with biological predictors of efficacy: a) measures of nicotinic receptors in lymphocytes b) DNMT1 and GAD67 mRNA in lymphocytes. Subjects will be current cigarette smokers or history of regular smokers.


Options:
A: Inclusion Criteria:

* Age 18 or older
* English speaking
* Smoked at least 100 cigarettes/lifetime
* Smokes 5 or more cigarettes per day
* Interested in quitting smoking (preparation or contemplation state of change)
* Enrolled in Einstein/Montefiore methadone program for 3 or more months
* Stable methadone dose for 2 weeks
* Agree to use contraception throughout the trial (among women with reproductive potential)
* Willing to participate in all study components
* Able to provide informed consent

Exclusion Criteria:

* Serious or unstable HIV/AIDS, liver, cardiovascular, or pulmonary disease
* Psychiatric instability
* Women who are pregnant, breastfeeding, or contemplating pregnancy
* Creatinine clearance less than 30 mL/min
B: Inclusion Criteria:

* Age 18 or older
* Being treated at the Duke Smoking Cessation Program
* Fluent in written and spoken English.

Exclusion Criteria: N/A
C: Inclusion Criteria:

Diagnosis of Schizophrenia or Schizoaffective Disorder Current Cigarette Smoker or History of Chronic Cigarette smoking Age 18-65 Currently taking antipsychotic medication

Exclusion Criteria:

prior history of hospitalization for acute myocardial infarction or stroke, or persistent angina pectoris with current symptoms Patients who have previously tried varenicline and have stopped taking it because of side-effects of severe nausea or vomiting suicide attempt in the last year and or have had prominent or serious suicidal thoughts in the past year Women who are pregnant, nursing, or unable to use reliable contraception significant renal impairment(Creatinine ≥ 1.5) baseline Hamilton Depression Scores is \>20
D: Inclusion Criteria:

* DSM-IV diagnosis of schizophrenia or schizoaffective disorder and nicotine dependence
* Fagerstrom Test for Nicotine Dependence (FTND) score greater than 5
* Smokes at least 20 cigarettes per day (1 pack per day)
* Expired breath CO level \> 10 ppm and cotinine level \> 210 ng/ml at the baseline measurement
* Currently taking a stable dose of antipsychotic
* Complete remission from positive symptoms of psychosis as judged by a psychiatric evaluation

Exclusion Criteria:

* Meets criteria for current abuse or dependence for any alcohol or illicit substance within the past month
* History of hypersensitivity to bupropion or the nicotine transdermal patch (NTP)
* Current diagnosis of a serious documented medical disorder that would make bupropion treatment risky OR results of psychiatric/medical screening that suggest a reason for concern (e.g., a history of severe heart, liver, or kidney disease or diabetes mellitus)
* Currently taking monoamine oxidase inhibitors or bupropion (Zyban or Wellbutrin)
* Currently taking diabetes mellitus medications, St. John's Wort, appetite suppressants, ephedrine-containing medications, theophylline, clonidine, reserpine, methyldopa, or anti-anginal medications (e.g., beta-blockers, calcium channel blockers, nitroglycerin preparations)
* History of schizoaffective disorder and not stabilized on a mood stabilizer (e.g., lithium, valproate, carbamazepine)

Answer: C