Serotonin Selective Reuptake Inhibitor Treatment of Dual Diagnosis Post-traumatic Stress Disorder and Alcohol Problems

Study Overview
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Brief Summary
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The investigators propose to conduct a clinical trial to evaluate sertraline treatment efficacy in a large sample of military veterans with a dual diagnosis of PTSD and Alcohol Use Disorder who are receiving Cognitive and Behavioral Therapy as part of the VA-system's new dual diagnosis program. The study is designed as an efficacy trial of sertraline used as an adjunct to Cognitive Behavioral Therapy (CBT) in the treatment of PTSD/Alcohol dual diagnosis. There are two outcomes of interest, namely PTSD symptom improvement and also decreased alcohol consumption. The investigators are interested to know whether or not sertraline is superior to placebo in improving the symptoms of either one or both of these two disorders. Even though sertraline is a treatment of choice for PTSD, the investigators expect that the comorbid condition of alcohol dependence will complicate the treatment of PTSD and that the clustered subgroups will show differential treatment response with sertraline. The primary objective of the present study is to identify subgroups of alcohol dependent persons with PTSD who will either benefit or not benefit from treatment with SSRI's. The proposed study will enroll veterans with PTSD and dually-diagnosed alcohol dependence in a 12-week treatment providing sertraline vs. placebo medication as an adjunct to manualized CBT and will specifically test the hypothesis that subtypes of alcohol dependence can be used to predict which patients respond well and which subgroup responds poorly to SSRI treatment.

Detailed Description
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Experimental Design. The study design is a parallel group, double-blind, placebo-controlled, stratified, randomized medication treatment trial of male and female veterans who experienced in-theater trauma and have both a PTSD and Alcohol Use dual diagnosis. All subjects will receive 12 weeks of manualized cognitive & behavioral therapy as a standard of care. Additionally, subjects will be randomized 1:1 to receive double-blind treatment with Sertraline vs. Placebo as an adjunctive treatment. The manualized therapy provides standard cognitive-behavioral therapy (CBT) addressing alcohol use and prolonged exposure (PE) behavioral therapy targeting PTSD. Sertraline is a common treatment for PTSD and psychiatric disturbance but is hypothesized to have differential efficacy in different subtypes of alcohol drinking patients. A stratified randomization scheme will balance placebo and sertraline assignment to two groups, and a post-hoc clustering approach will be used to determine which subgroups of dual diagnosis patients may benefit from sertraline vs. placebo treatment. Veterans with PTSD who regularly drink more than 5 standard drinks of alcohol in a day (note one 12oz beer = one standard drink) may be eligible for the study if they meet criteria.

Official Title
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SSRI Treatment of Dual Diagnosis PTSD and Alcohol Dependence: A Test of the Serotonergic Hypothesis

Conditions
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PTSD, Alcohol Use Disorder

Intervention / Treatment
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* Drug: Sertraline
* Drug: Placebo


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: 21-65 year old Veterans with PTSD who regularly drink more than 5 standard drinks of alcohol in a day who experienced a trauma during deployment and who regularly drink more than 5 standard drinks alcohol and are interested in coming in once per week for 12 weeks of dual diagnosis individual therapy and are willing to participate in a placebo-controlled trial which could include receipt of sertraline (Zoloft). Exclusion Criteria: if their PTSD Symptoms are adequately controlled by other medication regimens; they require inpatient alcohol detoxification; or currently receive naltrexone, disulfiram, acamprosate, or ondansetron treatment for alcohol dependence; or currently have an unstable medical illness; or have a bipolar or psychotic disorder; or currently are taking and are unwilling to discontinue taking any SSRI, SNRI, MAO inhibitor, tricyclic antidepressant, or anticonvulsant.

Ages Eligible for Study
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Minimum Age: 21 Years
Maximum Age: 65 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Triple


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Sertraline<br>Subjects will receive a fixed dose of 150 mg sertraline per day. Sertraline dose will be gradually increased by giving sertraline subjects capsules filled with 50 mg for the first three days and then capsules filled with 100 mg for 4 days before beginning the 150 mg per day in the second week. After completing the study Visit 12, subjects will be given an additional two week supply of medicine to gradually taper down so as to minimize any withdrawal discomfort. Subjects in the Sertraline arm also will receive COPE therapy (Concurrent Treatment with Prolonged Exposure)which involves 12 sessions of manualized cognitive and behavioral therapy including exposure therapy for PTSD. | Drug: Sertraline<br>* A Randomized Controlled Trial Design will randomize subjects to one of two arms. Sertraline is the active medication treatment arm.<br>* Other names: Zoloft;|
| Placebo Comparator: Placebo<br>Matching placebo capsules will be filled with corn starch only on the same schedule as the Sertraline. Subjects in the Placebo arm also will receive COPE therapy (Concurrent Treatment with Prolonged Exposure)which involves 12 sessions of manualized cognitive and behavioral therapy including exposure therapy for PTSD. | Drug: Placebo<br>* A Randomized Controlled Trial Design will randomize subjects to one of two arms. Placebo is the control medication treatment arm.<br>* Other names: Placebo Control;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Percent Heavy Drinking Days | Number of heavy drinking days in a 12 week period is reported by subjects and the percentage is calculated. | 12 weeks | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| PTSD (Post Traumatic Stress Disorder) Symptom Score From PCL (Patient Monitoring Checklist) | The PCL is a self-report measure that can be completed by patients in a waiting room prior to a session or by participants as part of a research study. The survey has 20 questions scored as: 0=Not at all A little bit Moderately Quite a bit Extremely Interpretation of the PCL should be made by a clinician. The total symptom severity score is obtained by summing the scores for each of the 20 items to give a total of 1-80 points. The lower the score, the less severe the symptoms of PTSD, the higher the score, the more severe the symptoms. | 12 weeks of treatment | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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PTSD, Alcohol, Dual Diagnosis, Sertraline, SSRI