Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Phase 4, Multi-National, Randomized, Double-Blind, Placebo-Controlled Study To Evaluate The Efficacy And Safety Of Varenicline Compared To Placebo For Smoking Cessation Through Reduction
Brief Summary: This study will determine whether varenicline is safe and helps people to quit smoking through reduction when they are not willing/able to make an abrupt quit attempt.


Options:
A: Inclusion Criteria:

* MSK patients diagnosed with breast cancer or have a mass suspicious of breast cancer at the time of enrollment, as per clinician judgment or EMR;
* Self-reported current cigarette smoker (defined as daily smoking in the past seven days)
* Advised to quit smoking by their MSK physician and willing to receive smoking cessation counseling and treatment; as per self report
* Fluent in English

Exclusion Criteria:

* Patients less than 18 years of age because the safety and efficacy of varenicline have not yet been tested in children;
* Evidence of any known or suspected medical contraindications for use of varenicline (e.g., recent (within past two months) cardiovascular instability (including myocardial infarction or unstable angina; uncontrolled hypertension, significant neurological sequelae of cerebrovascular disease, or severe congestive heart failure (New York Heart Association class III or IV), severe chronic obstructive pulmonary disease; uncontrolled gastrointestinal, hepatic, or endocrine disease; or severe renal impairment.
* Self-reported evidence of significant psychiatric history (e.g., schizophrenia, unstable bipolar disorder, panic disorder, untreated major depression) sufficient, in the investigators' judgment, to preclude participation in the clinical trial;
* Self-reported evidence of recent substance abuse or heavy alcohol use (\> 14 drinks weekly) in the last 6 months;
* Self-reported recent use (in the past 30 days) or planned use of nicotine replacement therapy (NRT) or other FDA approved cessation pharmacotherapy (bupropion);
* Pre-menopausal women who are pregnant as per EMR
* Women who are breast-feeding as per self-report.
B: Inclusion Criteria:

* currently smoking at least 15 cigarettes daily
* in good health
* able to read and speak English fluently
* have a home telephone and plan to reside in Western New York for 6 months
* willing to make quit attempt
* signed informed consent
* who planned quit attempt.

Exclusion Criteria:

* serious medical condition
* depression or mental health condition requiring treatment in the past year
* history of panic disorder, psychosis, bipolar disorder
* alcohol or drug abuse in the past year
* use of tobacco products other than cigarettes
* current use of other cessation pharmacotherapies
* pregnancy/planned pregnancy.
C: Inclusion Criteria:

* Smokes at least 10 cigarettes per day
* Good general health
* Negative pregnancy test prior to study entry

Exclusion Criteria:

* Prior exposure to NicVAX or any other nicotine vaccine
* Known allergic reaction to alum or any of the components of the vaccine
* Use of systemic steroids, immunosuppressive agents or other medication that might interfere with an immune response
* Cancer or cancer treatment in the last 5 years
* HIV infection
* History of drug or alcohol abuse or dependence within 12 months
* Significant cardiovascular, hepatic, renal, psychiatric and/or respiratory disease
* Previous intolerance to varenicline
* Inability to fulfill all visits for approximately 54 weeks
D: Inclusion Criteria:

* Male and female cigarette smokers over the age of 18 years who are not willing/able to quit smoking within the next month but who are willing to attempt to reduce their smoking to work toward a quit attempt within the next 3 months.
* Subjects must have smoked an average of at least 10 cigarettes per day during the past year and during the month prior to the screening visit, with no continuous period of abstinence greater than 3 months in the past year and who have an exhaled carbon monoxide (CO) \>10 ppm at screening.
* Subjects with mild to moderate depression or anxiety may be included if their condition is stable.

Exclusion Criteria:

* Subjects with a history of a suicide attempt or any suicidal behavior in the past two years.
* Subjects with severe depression or anxiety.
* Subjects with psychosis, panic disorder, bipolar disorder, post traumatic stress disorder (PTSD), or schizophrenia.
* Subjects with alcohol or substance abuse or dependence (except nicotine) unless in full remission for at least 12 months.

Answer: D