Varenicline Treatment in Alcohol and Nicotine Dependent Patients With Schizophrenia - a Double Blind, Placebo Controlled Trial
试验速览
- 阶段
- 4 期
- 状态
- 已完成
- 发起方
- 入组人数
- 10
- 试验地点
- 1
- 主要终点
- The primary outcome measure for alcohol use will be the number of drinks/week at the end of the treatment phase, relative to baseline and during-treatment data.
研究概览
简要总结
The aim of the proposed pilot study is to find out whether varenicline (ChantixTM) treatment decreases alcohol use and smoking in patients with schizophrenia or schizoaffective disorder. Varenicline may also improve cognition (memory and concentration) and negative symptoms (e.g. poor attention, poverty of speech, apathy, affective flattening, anhedonia) in patients with schizophrenia and comorbid nicotine and alcohol dependence.
详细描述
Alcohol use (more than 33%) and smoking (80-90%) commonly occur together in patients with schizophrenia. Varenicline (ChantixTM) has been approved by the FDA as a medication for smoking cessation. Recent animal studies have shown that chronic varenicline administration decreased alcohol consumption. There are no human data available on the effectiveness of varenicline in alcohol-use disorders.
The aim of the proposed pilot study is to find out whether varenicline treatment decreases alcohol use and smoking in patients with schizophrenia or schizoaffective disorder. Varenicline may also improve cognition (memory and concentration) and negative symptoms (e.g. poor attention, poverty of speech, apathy, affective flattening, anhedonia) in patients with schizophrenia and comorbid nicotine and alcohol dependence.
The proposed pilot study will enroll a cohort of up to 30 subjects with schizophrenia or schizoaffective disorder and nicotine and alcohol dependence, who are receiving ongoing outpatient mental health treatment from community providers. Subjects will be randomly assigned to one of the two treatment groups (varenicline vs. placebo). Following a one week screening phase, participants will be seen on day 4, day 8, then weekly over an 8-week treatment period. One week supply of medication will be dispensed at each study visit, with the exception of the first week, when only 4 days supply will be given on 2 days (visit 1 and 2). One month after discontinuation of medication, a follow-up interview will be conducted.
Varenicline and placebo will be dispensed in 0.5 mg and 1 mg color coded capsules. During the first 3 days of treatment, participants will take one 0.5 mg tablet of varenicline (or placebo) by mouth daily. If the medication is well-tolerated, the dose will be increased to 0.5 mg by mouth twice daily for 4 days. From day 8, the dose will be increased to the standard dosing schedule of 1 mg (1 tablet) by mouth twice daily. At the end of the 8th week, varenicline will be discontinued.
A structured clinical psychiatric interview and physical exam will be performed at baseline, along with a urine drug screen, which will be repeated on week 8, and at 1 month follow-up. Blood tests (complete blood count, basic metabolic panel, liver function tests) will be performed at baseline, then monthly.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- Triple (Participant, Care Provider, Investigator)
入排标准
- 年龄范围
- 18 Years 至 69 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Males or females, ages 18 to 69, with a DSM-IV diagnosis of Schizophrenia or Schizoaffective Disorder, receiving outpatient psychiatric treatment
- •Currently taking antipsychotic medication for at least 4 weeks (medication is prescribed, compliance assessed based on self-report and collateral information)
- •Current DSM-IV diagnosis of Nicotine Dependence
- •Current DSM-IV diagnosis of Alcohol Dependence
- •Subject expresses a desire to cut down or quit smoking and drinking (based on assessment with contemplation ladder)
- •An average of at least one pack of cigarettes per day (>=20 cigarettes/day) over the 7 days prior to intake
- •An average of at least 7 drinks over the 7 days prior to intake
排除标准
- •Inability to give adequate informed consent
- •Currently taking sustained - release bupropion (Zyban) or receiving any other form of bupropion, such as Wellbutrin or Wellbutrin SR; receiving another form of pharmacological smoking cessation treatment (e.g., nicotine gum or patch); or participating in another structured, formal smoking cessation program.
- •Currently taking naltrexone (ReVia), Campral or Antabuse
- •Participation in a clinical trial less than 3 months prior to intake
- •History of suicide attempt in the past year
- •History of hospitalization due to suicidal ideation in the past year
- •Suicidal ideation at baseline
- •Known allergic reaction to varenicline
- •Female patients of childbearing potential who are sexually active, not sterile, and who deny using a form of birth control.
- •Female patients who are pregnant or nursing.
- •Significant unstable medical problems (e.g. impaired renal function).
- •Significant unstable psychiatric disorders.
- •Subjects who do not attend all required screening appointments.
- •Subjects who have pending legal proceedings whose outcome may lead to incarceration within 3 months of intake.
- •Positive urine drug screen for cocaine, opioids or amphetamine at baseline
- •Current DSM-IV diagnosis of Cocaine, Opioid or Cannabis Dependence (1 month prior to enrollment)
- •Metal implants or devices (e.g. aneurysm clips, cochlear implants, neural stimulators, cardiac pacemakers)
- •Weight over 250 lbs
- •Claustrophobia
研究组 & 干预措施
1 Varenicline
Varenicline will be dispensed in 0.5 mg (blue capsules containing a 0.5 mg varenicline tablet) and 1 mg (red capsules containing a 1 mg varenicline tablet) capsules taken orally. During the first 3 days of medication, participants will take one blue capsule (0.5 mg tablet) of varenicline daily. If the medication is well-tolerated, the dose will be increased to one blue capsule (0.5 mg) po twice daily for 4 days. On day 8, the dose will be increased again to the standard dosing schedule of 1 red capsule (1 mg) po twice daily. At the end of the 8th week, varenicline will be discontinued.
干预措施: Varenicline (Drug)
2 Placebo
Placebo will be dispensed in blue and red color coded capsules. During the first 3 days, participants will take one blue capsule po daily. If the medication is well-tolerated, the dose will be increased to one blue capsule po twice daily for 4 days. On day 8, the patients will take 1 red capsule po twice daily. At the end of the 8th week, placebo will be discontinued.
干预措施: Placebo (Drug)
结局指标
主要结局
The primary outcome measure for alcohol use will be the number of drinks/week at the end of the treatment phase, relative to baseline and during-treatment data.
时间窗: 8 weeks
次要结局
- Improvement in cognition will be assessed using the standardized California Verbal Learning Test (CVLT).(8 weeks)
- Improvement in negative symptoms will be assessed using the PANSS negative score.(8 weeks)
- The outcome measure for smoking cessation effectiveness will be the amount of carbon monoxide in expired air at the end of the treatment phase, relative to data collected at baseline and during treatment.(8 weeks)
- The safety of Varenicline use will be determined by examination of adverse events observed during the course of this investigation, with particular emphasis on comparing the frequency of adverse events in Placebo versus Treatment groups.(8 weeks)