Posttraumatic Stress DisorderPhase 2DoxazosinNCT02500602
CAP: Doxazosin in the Treatment of Co-Occurring PTSD and Alcohol Use Disorders
A Phase 2 study testing doxazosin in people with Posttraumatic Stress Disorder and Alcohol Use Disorders, run by VA Office of Research and Development at 1 site in United States.
Trial summary
The proposed study will examine the efficacy of doxazosin in the treatment of PTSD and alcohol use disorder or substance use disorders. Read more about this study
- Who is it for?
- Any age
- Conditions the study is for
- Posttraumatic Stress Disorder, Alcohol Use Disorders
- What is being tested?
- doxazosin
- Type of treatment
- Pill or oral medicine
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 144 participants
- Where
- 1 siteUnited States
- Study dates
- 1 Jun 2016to 16 Dec 2019
- Phase
- Phase 2
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages Any age
- All sexes
- No healthy volunteers
- Child, Adult, Older adult
Who may be able to join
- Male or female; any race or ethnicity.
- Served in U.S. Military - any branch or operation.
- Subjects must be able to comprehend English.
- Meet criteria for current (i.e., last 6 months) Substance Use Disorder (SUD) using a modified version of the MINI 7.0 (i.e., must meet DSM-5 criteria for SUD in the past 6 months instead of 12 months).
- Meet DSM-5 criteria for current (i.e., last month) PTSD.
- Subjects taking psychotropic medications will be required to be maintained on a stable dose for at least four weeks before treatment initiation. This is because initiation or change of medications during the course of the trial may interfere with interpretation of results.
- Must consent to random assignment to doxazosin or placebo.
- Must consent to complete all treatment and follow-up visits.
Who cannot join
- Subjects meeting DSM-5 criteria for current bipolar affective disorders, as the study protocol may be therapeutically insufficient.
- Subjects experiencing significant withdrawal symptoms, as evidence by a score of 10 or above on the Clinical Institute Withdrawal Assessment of Alcohol (CIWA). These subject will be referred for clinical detoxification and may be re-assessed for study eligibility after medically supervised detoxification has been completed.
- Individuals considered an immediate suicide risk or who are likely to require hospitalization during the course of the study.
- Previous treatment with doxazosin.
- Subjects on maintenance anxiolytic, antidepressant, or mood stabilizing medications which have been initiated during the past four weeks. If it is determined, based on clinical criteria, that a subject needs to be started on maintenance medications for anxiety, mood or psychotic symptoms during the course of the study, they may be discontinued from the treatment trial.
- Women who are pregnant, nursing or not practicing an effective form of birth control.
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- Individuals with a history of or current medical illness including unstable angina, myocardial infarction, congestive heart failure or other cardiac condition, hypotension, renal or hepatic disorders, endocrine disorders, prostate or other cancer, pancreatitis, or a seizure disorder.
- Subjects with abnormal liver function test (LFTs) as evidenced by laboratory findings of SGOT or SGPT greater than two times normal.
- Subjects with a history of adverse reactions to quinazolines or other alpha-1-antagonists (such as allergic reactions, priapism, hepatitis, angioedema, or intraoperative floppy iris syndrome).
- Individuals currently taking alpha blockers (terazosin, prazosin), hypnotics/benzodiazepines, atypical antipsychotics (olanzapine, quetiapine, risperidone, clozapine), alpha-2-agonists (Clonidine, methyldopa, tizanidine, guanfacine), conivaptan, boceprevir, idelalisib, PDE-5 inhibitors or alpha-1-antagonists, protease inhibitors (treatment of HIV), oral antifungals, alfuzosin, pazopanib, silodosin, tadalafil, or tamulosin.
- MRI exclusions: Claustrophobia; tattoos above the shoulders after evaluation by MRI technician; permanent eyeliner or permanent artificial eyebrows; cardiac pacemaker; metal fragments in eye, skin, or body, including shrapnel; heart valve replacement; brain clips; venous umbrella; being a sheet-metal worker or welder; lifetime history of aneurysm surgery; intracranial bypass, renal, or aortic clips; prosthetic devices such as middle ear, eye, joint, or penile implants; joint replacements; non-removable hearing aid, neurostimulator, or insulin pump; shunts/stents; metal mesh/coil implants; metal plate/pin/screws/wires; or any other metal implants.
Trial locations and contacts
1 site in 1 country.
United States1 site
Ralph H. Johnson VA Medical Center, Charleston, SC
Charleston, South Carolina, 29401-5799
About this study
Official title: CAP - Doxazosin in the Treatment of Co-Occurring PTSD and Alcohol Use Disorders
The proposed study will examine the efficacy of doxazosin in the treatment of PTSD and alcohol use disorder or substance use disorders.
Read the detailed description
Due to sustained military conflicts in Afghanistan and Iraq over the past decade, there are an increasing number of U.S. military personnel and Veterans returning home with posttraumatic stress disorder (PTSD) and comorbid alcohol use disorders (AUD) and substance use disorders (SUD). If left untreated, Veterans with co-occurring PTSD and substance use disorders are at increased risk for developing other mental health problems (e.g., depression, anxiety), suicidal ideation and attempts, physical health problems, reduced resiliency and military readiness, employment problems, violence, and family/relationship impairment. While mental health services are in place for U.S. service members, substantial gaps in the treatment of co-occurring PTSD and SUD exist and there is little scientific evidence available to guide the provision of care. As part of the Consortium to Alleviate PTSD (CAP), the proposed study directly addresses this critical knowledge gap by testing the efficacy of doxazosin, a long-acting and selective alpha-1 adrenergic antagonist, as compared to placebo in reducing PTSD and AUD/SUD severity among U.S. military personnel. The medication to be investigated (doxazosin) represents a novel treatment approach for PTSD and AUD/SUD. While prazosin, also an alpha-1 adrenergic antagonist, has been shown to improve sleep and nightmares in military personnel with PTSD and may help reduce substance use severity, it has a short half-life of 2-3 hours and requires multiple doses each day, which is a significant limitation. In several pilot studies, doxazosin has shown promise in significantly reducing symptoms of PTSD and AUD/SUD and, in contrast to prazosin, it requires once per day dosing which confers a significant advantage in terms of translating positive findings into routine clinical practice. In this Stage II study, the investigators will (1) employ a two-arm randomized, double-blind, between-groups experimental design that will consist of 12 weeks of treatment with doxazosin or placebo medication; (2) use standardized, repeated dependent measures to rigorously assess PTSD symptomatology and AUD/SUD severity; (3) measure impairment in associated mental and behavioral health problems (e.g., depression, anxiety, sleep, risky behaviors, family/social functioning); and (4) use functional magnetic resonance imaging (fMRI) to investigate the underlying pathophysiology of comorbid PTSD/AUD and identify prognostic indicators of treatment outcome. To achieve these aims, the investigators have assembled a multidisciplinary team of investigators with nationally-recognized expertise in combat-related PTSD, substance use disorders and neuroimaging who have successfully collaborated in the past and are uniquely qualified to implement this type of investigation. The investigators represent a collaboration of faculty at the Ralph H. Johnson Veterans Affairs (VA) Medical Center and the Medical University of South Carolina (MUSC) in Charleston, SC.
- Being tested
- doxazosin, placebo
- Keywords
- PTSD, alcohol use disorders, posttraumatic stress disorder, AUD, Veteran, substance use disorders, SUD
- Medical subject headings
- Stress Disorders, Post-Traumatic, Alcoholism, Substance-Related Disorders
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
doxazosinDrug
active medication
placeboDrug
placebo pill
| Study group | Role | What they receive |
|---|---|---|
| Doxazosin | Experimental | Participants randomly assigned to receive doxazosin (target dose of 16 mg/day). Doxazosin will be initiated at 1 mg/day for the first week, 2mg/day for the second week, 4mg/day for the third week, 8mg/day for the fourth week, and then increase to 16 mg/day for the remaining eight weeks (as tolerated). Research staff administered the study medication at the weekly visits, and participants were given take-home doses of the medication to self-administer on the days in between study visits. Receives: Drug: doxazosin |
| Placebo | Placebo comparator | Participants randomly assigned to placebo. Research staff administered the study medication at the weekly visits, and participants were given take-home doses of the medication to self-administer on the days in between study visits. Receives: Drug: placebo |
What is being measured
The primary outcome is the main question the study is designed to answer.
Clinician Administered PTSD Scale
The primary PTSD outcome measure was the Clinician-Administered PTSD Scale for DSM-5 (CAPS-5; Weathers et al., 2013). The CAPS-5 is a semi-structured interview that measures the DSM-5 symptoms of PTSD and requires the presence of at least one intrusion symptom, one avoidance symptom, two cognition and mood symptoms, and two arousal symptoms for a period of 1 month or more to reach diagnostic threshold. There are 20 symptom items and responses that are rated on a 5-point scale ranging from 0 (absent) to 4 (extreme/incapacitating), with a total PTSD symptom severity score of the sum of the 20 symptom items ranging from 0-80, and lower scores indicating better outcomes (or less severe PTSD symptomology). The CAPS-5 was assessed at end of treatment (week 12).
Measured: 12 Weeks
PTSD Checklist (PCL-5)
The secondary PTSD outcome measure was the PTSD Checklist-5 (PCL-5; Weathers et al., 2013b). The PCL-5 is 20-item self-report measure that assesses the DSM-5 symptoms of PTSD using a severity rating Likert scale ranging from 0 to 4 that indicates the degree of distress across symptoms (0 = not at all to 4 = extremely). The overall score range is 0-80 (and combines the score for all 20 symptoms), with lower scores representing better outcomes (less severe PTSD symptomology). The PCL-5 was assessed at end of treatment (week 12).
Measured: 12 Weeks
Time Line Follow Back (TLFB)
The TLFB obtains retrospective self-report of substance use by using a calendar and memory prompts to stimulate recall (Sobell \& Sobell, 1992). Quantity and frequency assessments are made using this instrument (e.g., total number of standard drink units, percent of days using) as well as abstinence (yes/no). TLFB yields consistently high test-retest correlations and correlates well with other self-reports and collateral reports (Sobell et al., 2003). The TLFB assesses frequency and amount of substance use over a pre-determined timeframe. TLFB data were collected throughout the trial, and the values reported here represent the TLFB data at end of treatment (week 12).
Measured: 12 Weeks
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted16 Jul 2015 (estimated)
- Study start1 Jun 2016
- Primary completion16 Dec 2019
- Study completion16 Dec 2019
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for Posttraumatic Stress DisorderStudies of the same condition, open and under way.
- More trials run by VA Office of Research and DevelopmentThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 2
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Quadruple blind
- Who is masked
- Participant, Care provider, Investigator, Outcomes assessor
- Enrolment
- 144 participants (actual)
Sponsor and investigators
- Lead sponsor
- VA Office of Research and Development
- Sponsor type
- US federal agency
- Collaborators
- Medical University of South Carolina
- Responsible party
- Sponsor
- Investigators
- Sudie E. Back, PhD, Principal investigator, Ralph H. Johnson VA Medical Center, Charleston, SC
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02500602
- Sponsor's protocol ID
- SPLE-001-14F
- Other IDs
- CX001288
- Acronym
- Doxazosin
- Status last verified
- Apr 2021
- First submitted
- 7 Jul 2015
- Last updated
- 13 May 2021
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- Yes
- FDA-regulated drug
- Yes
- FDA-regulated device
- No
- Individual data sharing
- Yes: Data Sharing Plan: The data collected from study participants, including PHI, will be entered into and securely stored in the STRONG STAR-CAP database on a secure UTHSCSA server by a member of the study research team under a signed Data Use Agreement between Ralph H. Johnson VA and UTHSCSA. Terms of the Data Use Agreement data have been reviewed and approved by VACO and found to meet VA security compliance standards. Electronic data will be stored, managed, and analyzed by the Data Management and Biostatistics Core staff of the STRONG STAR-CAP Consortium. The overall study PI and named collaborators will have access to identifiable data through the STRONG STAR-CAP website and UTHSCSA server.
Publications
Back SE, Flanagan JC, Mintz J, Brady KT, Jones J, Jarnecke AM, Joseph JE, Shirley DW, Malcolm RJ, Hamner M, Litz BT, Niles BL, Young-McCaughan S, Keane TM, Peterson AL. A Double-Blind Randomized Controlled Trial of Doxazosin for Co-Occurring PTSD and Alcohol Use Disorder in Veterans. J Clin Psychiatry. 2023 Mar 8;84(2):21m14367. doi: 10.4088/JCP.21m14367.
PubMed 36883885
Study at a glance
From the registry record, last updated by the sponsor on 13 May 2021. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- CAP - Doxazosin in the Treatment of Co-Occurring PTSD and Alcohol Use Disorders
- ClinicalTrials.gov ID
- NCT02500602
- Acronym / sponsor ID
- Doxazosin / SPLE-001-14F
- Keywords
- PTSD, alcohol use disorders, posttraumatic stress disorder, AUD, Veteran, substance use disorders, SUD
- Phase
- Phase 2
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 144 participants (actual)
- Lead sponsor
- VA Office of Research and DevelopmentUS federal agency
- Collaborators
- Medical University of South Carolina
- Study start
- 1 Jun 2016 (actual)
- Primary completion
- 16 Dec 2019 (actual)
- Study completion
- 16 Dec 2019 (actual)
- First posted
- 16 Jul 2015 (estimated)
- Results
- Posted 14 Apr 2021
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The proposed study will examine the efficacy of doxazosin in the treatment of PTSD and alcohol use disorder or substance use disorders.
Detailed description
Due to sustained military conflicts in Afghanistan and Iraq over the past decade, there are an increasing number of U.S. military personnel and Veterans returning home with posttraumatic stress disorder (PTSD) and comorbid alcohol use disorders (AUD) and substance use disorders (SUD). If left untreated, Veterans with co-occurring PTSD and substance use disorders are at increased risk for developing other mental health problems (e.g., depression, anxiety), suicidal ideation and attempts, physical health problems, reduced resiliency and military readiness, employment problems, violence, and family/relationship impairment. While mental health services are in place for U.S. service members, substantial gaps in the treatment of co-occurring PTSD and SUD exist and there is little scientific evidence available to guide the provision of care. As part of the Consortium to Alleviate PTSD (CAP), the proposed study directly addresses this critical knowledge gap by testing the efficacy of doxazosin, a long-acting and selective alpha-1 adrenergic antagonist, as compared to placebo in reducing PTSD and AUD/SUD severity among U.S. military personnel. The medication to be investigated (doxazosin) represents a novel treatment approach for PTSD and AUD/SUD. While prazosin, also an alpha-1 adrenergic antagonist, has been shown to improve sleep and nightmares in military personnel with PTSD and may help reduce substance use severity, it has a short half-life of 2-3 hours and requires multiple doses each day, which is a significant limitation. In several pilot studies, doxazosin has shown promise in significantly reducing symptoms of PTSD and AUD/SUD and, in contrast to prazosin, it requires once per day dosing which confers a significant advantage in terms of translating positive findings into routine clinical practice. In this Stage II study, the investigators will (1) employ a two-arm randomized, double-blind, between-groups experimental design that will consist of 12 weeks of treatment with doxazosin or placebo medication; (2) use standardized, repeated dependent measures to rigorously assess PTSD symptomatology and AUD/SUD severity; (3) measure impairment in associated mental and behavioral health problems (e.g., depression, anxiety, sleep, risky behaviors, family/social functioning); and (4) use functional magnetic resonance imaging (fMRI) to investigate the underlying pathophysiology of comorbid PTSD/AUD and identify prognostic indicators of treatment outcome. To achieve these aims, the investigators have assembled a multidisciplinary team of investigators with nationally-recognized expertise in combat-related PTSD, substance use disorders and neuroimaging who have successfully collaborated in the past and are uniquely qualified to implement this type of investigation. The investigators represent a collaboration of faculty at the Ralph H. Johnson Veterans Affairs (VA) Medical Center and the Medical University of South Carolina (MUSC) in Charleston, SC.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Quadruple blind (participant, care provider, investigator, outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Doxazosin | Experimental | Drug: doxazosinParticipants randomly assigned to receive doxazosin (target dose of 16 mg/day). Doxazosin will be initiated at 1 mg/day for the first week, 2mg/day for the second week, 4mg/day for the third week, 8mg/day for the fourth week, and then increase to 16 mg/day for the remaining eight weeks (as tolerated). Research staff administered the study medication at the weekly visits, and participants were given take-home doses of the medication to self-administer on the days in between study visits. |
| Placebo | Placebo comparator | Drug: placeboParticipants randomly assigned to placebo. Research staff administered the study medication at the weekly visits, and participants were given take-home doses of the medication to self-administer on the days in between study visits. |
Who may qualify
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child, Adult, Older adult
Key inclusion criteria (8 listed)
- Male or female; any race or ethnicity.
- Served in U.S. Military - any branch or operation.
- Subjects must be able to comprehend English.
- Meet criteria for current (i.e., last 6 months) Substance Use Disorder (SUD) using a modified version of the MINI 7.0 (i.e., must meet DSM-5 criteria for SUD in the past 6 months instead of 12 months).
- Meet DSM-5 criteria for current (i.e., last month) PTSD.
Key exclusion criteria (11 listed)
- Subjects meeting DSM-5 criteria for current bipolar affective disorders, as the study protocol may be therapeutically insufficient.
- Subjects experiencing significant withdrawal symptoms, as evidence by a score of 10 or above on the Clinical Institute Withdrawal Assessment of Alcohol (CIWA). These subject will be referred for clinical detoxification and may be re-assessed for study eligibility after medically supervised detoxification has been completed.
- Individuals considered an immediate suicide risk or who are likely to require hospitalization during the course of the study.
- Previous treatment with doxazosin.
- Subjects on maintenance anxiolytic, antidepressant, or mood stabilizing medications which have been initiated during the past four weeks. If it is determined, based on clinical criteria, that a subject needs to be started on maintenance medications for anxiety, mood or psychotic symptoms during the course of the study, they may be discontinued from the treatment trial.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| doxazosinactive medication | Drug | Doxazosin |
| placeboplacebo pill | Drug | Placebo |
Primary outcome
Clinician Administered PTSD Scale
Time frame: 12 Weeks
The primary PTSD outcome measure was the Clinician-Administered PTSD Scale for DSM-5 (CAPS-5; Weathers et al., 2013). The CAPS-5 is a semi-structured interview that measures the DSM-5 symptoms of PTSD and requires the presence of at least one intrusion symptom, one avoidance symptom, two cognition and mood symptoms, and two arousal symptoms for a period of 1 month or more to reach diagnostic threshold. There are 20 symptom items and responses that are rated on a 5-point scale ranging from 0 (absent) to 4 (extreme/incapacitating), with a total PTSD symptom severity score of the sum of the 20 symptom items ranging from 0-80, and lower scores indicating better outcomes (or less severe PTSD symptomology). The CAPS-5 was assessed at end of treatment (week 12).
PTSD Checklist (PCL-5)
Time frame: 12 Weeks
The secondary PTSD outcome measure was the PTSD Checklist-5 (PCL-5; Weathers et al., 2013b). The PCL-5 is 20-item self-report measure that assesses the DSM-5 symptoms of PTSD using a severity rating Likert scale ranging from 0 to 4 that indicates the degree of distress across symptoms (0 = not at all to 4 = extremely). The overall score range is 0-80 (and combines the score for all 20 symptoms), with lower scores representing better outcomes (less severe PTSD symptomology). The PCL-5 was assessed at end of treatment (week 12).
Time Line Follow Back (TLFB)
Time frame: 12 Weeks
The TLFB obtains retrospective self-report of substance use by using a calendar and memory prompts to stimulate recall (Sobell \& Sobell, 1992). Quantity and frequency assessments are made using this instrument (e.g., total number of standard drink units, percent of days using) as well as abstinence (yes/no). TLFB yields consistently high test-retest correlations and correlates well with other self-reports and collateral reports (Sobell et al., 2003). The TLFB assesses frequency and amount of substance use over a pre-determined timeframe. TLFB data were collected throughout the trial, and the values reported here represent the TLFB data at end of treatment (week 12).
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 13 May 2021.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Derived from this study: PubMed 36883885Back SE, Flanagan JC, Mintz J, Brady KT, Jones J, Jarnecke AM, Joseph JE, Shirley DW, Malcolm RJ, Hamner M, Litz BT, Niles BL, Young-McCaughan S, Keane TM, Peterson AL. A Double-Blind Randomized Controlled Trial of Doxazosin for Co-Occurring PTSD and Alcohol Use Disorder in Veterans. J Clin Psychiatry. 2023 Mar 8;84(2):21m14367. doi: 10.4088/JCP.21m14367.
- Individual participant dataSharing planned: Yes. Data Sharing Plan: The data collected from study participants, including PHI, will be entered into and securely stored in the STRONG STAR-CAP database on a secure UTHSCSA server by a member of the study research team under a signed Data Use Agreement between Ralph H. Johnson VA and UTHSCSA. Terms of the Data Use Agreement data have been reviewed and approved by VACO and found to meet VA security compliance standards. Electronic data will be stored, managed, and analyzed by the Data Management and Biostatistics Core staff of the STRONG STAR-CAP Consortium. The overall study PI and named collaborators will have access to identifiable data through the STRONG STAR-CAP website and UTHSCSA server.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Sudie E. Back, PhD principal investigator
Ralph H. Johnson VA Medical Center, Charleston, SC
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 2 study testing doxazosin in people with Posttraumatic Stress Disorder and Alcohol Use Disorders, run by VA Office of Research and Development at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 8 inclusion and 11 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 13 May 2021. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Yes. Results are posted in the registry (first posted 14 Apr 2021). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Clinician Administered PTSD Scale (time frame: 12 Weeks). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT02500602, which also lists 1 linked publication.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 13 May 2021; AzTrials last refreshed its copy on 8 Nov 2026.