Please select the eligibility criteria that correspond to the clinical trial below.
Title: Varenicline, an Alpha 4 Beta 2 Nicotinic Acetylcholine Receptor Partial Agonist, on Cognitive Dysfunction in 120 Patients With Schizophrenia: a Randomized, Double Blind, 8 Weeks Trial
Brief Summary: The primary objective of this project is to examine the effects of varenicline treatment used concomitantly with antipsychotic medications, on cognitive dysfunction in people with schizophrenia. The secondary objective is to evaluate the effect of this combination therapy on smoking in people with schizophrenia. This study will be a randomized, double blind, parallel group, placebo controlled 8 weeks trial.


Options:
A: Inclusion Criteria:

* Smokes a minimum of 10 cigarettes daily for at least 1 year prior to study entry
* Abstinence from alcohol and other non-nicotine drugs for between 1 and 12 months at time of study entry
* Meets criteria for alcohol dependence or abuse in the 12 months prior to study entry

Exclusion Criteria:

* History of seizures, head trauma and/or severe hepatic cirrhosis
* Current use of medications known to affect smoking behavior and/or cessation
* Use of tricyclic antidepressant medication and monoamine oxidase inhibitors
* Major depressive disorder within the month prior to study entry
* Eating disorder within the year prior to study entry
* History of bipolar or psychotic disorder
* Pregnant or breastfeeding
* Unstable serious medical disorder
* History of migraines
* Currently using smokeless tobacco, pipes, or cigars
B: Inclusion Criteria:

* Current cigarette smokers between the ages of 18 and 75 years, who are motivated to stop smoking

Exclusion Criteria:

* Patients currently suffering from depression, or have been diagnosed with depression in the last 12 months, or subjects with past or present history of psychosis, panic disorder, or bipolar disorder
* Any subject with known severe chronic obstructive pulmonary disease (COPD)
C: Inclusion Criteria:

* Clinically stable patients with schizophrenia

Exclusion Criteria:

* Refractory schizophrenia
* Mental Retardation
* Serious Medical illness
D: Inclusion Criteria:

* Currently a patient in the Omaha VA Medical Center, Substance Abuse Treatment Center (SATC) or at Catholic Charities Campus for Hope.
* Have a diagnosis of alcohol abuse or alcohol dependence.
* Smoke 20 or more cigarettes/day (may also smoke pipes/cigars).
* Be interested in quitting smoking.
* Provide name, addresses, and phone numbers of at least two individuals who can provide information on their alcohol, nicotine, and other drug use during the follow-up period.
* If female, patient must a) be of non-childbearing potential, b) have a negative pregnancy test, c) sign a document stating they do not plan on becoming pregnant during the study.
* Agree to sign informed consent.
* Able to read and understand study-related forms and procedures.

Exclusion Criteria:

* Advanced cardiac, pulmonary, renal, or liver disease.
* History of seizures.
* History of brain tumor or significant head trauma.
* History of bulimia or anorexia nervosa.
* Current major depressive disorder or past history of panic disorders, schizophrenia, or bipolar affective disorder.
* Using psychoactive drugs.
* Receiving treatment with medications that lower seizure thresholds.
* Use of an investigational drug in any study in the past four weeks.
* Currently using any asthma medication.
* Used time-released bupropion in the past 12 months.
* Currently using any other treatments to stop smoking.

Answer: C