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Anxiety DisorderPhase 3NCT00114127

Duloxetine for Social Anxiety Disorder: Prediction of Long Term Outcome

A Phase 3 study testing Duloxetine in people with Anxiety Disorder, run by Massachusetts General Hospital at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The purpose of this study is to examine the safety and efficacy of duloxetine for the treatment of social anxiety disorder. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Anxiety Disorder
What is being tested?
Duloxetine
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
28 participants
Where
1 siteUnited States
Study dates
Jun 2004to Jul 2010
Phase
Phase 3
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 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Male or female outpatients > 18 years of age with a primary psychiatric diagnosis of generalized social anxiety disorder as defined by DSM-IV criteria and an LSAS score > 50.
  • Physical examination, electrocardiogram, and laboratory findings without clinically significant abnormalities.
  • Willingness and ability to comply with the requirements of the study protocol.

Who cannot join

  • Patient has a history of intolerance or lack of response to a treatment trial of duloxetine at highest tolerated dose (<120mg/day).
  • Patients with acute narrow angle glaucoma.
  • Pregnant women, lactating women, and women of childbearing potential who are not using medically accepted forms of contraception (e.g., IUD, oral contraceptives, barrier devices, condoms and foam, or implanted progesterone rods stabilized for at least 3 months).
  • Concurrent use of other psychotropic medications. Patients must discontinue regular benzodiazepine or antidepressant therapy at least one week (5 weeks for fluoxetine) prior to baseline. Concomitant beta-blockers are proscribed unless prescribed for a medical indication (e.g., hypertension, at a stable daily dose for > 1 month).
  • Patients with a history of failure to satisfactorily respond to >2 prior adequate treatment trials.
  • Significant personality dysfunction likely to interfere with study participation.
Show all 12Show fewer
  • Serious medical illness or instability for which hospitalization may be likely within the next year.
  • Seizure disorders with the exception of a history of febrile seizures if they occurred during childhood, were isolated, and did not recur in adulthood.
  • Concurrent psychotherapy initiated within 2 months of baseline is prohibited. Ongoing psychotherapy of any duration directed specifically toward treatment of the social anxiety disorder is excluded. Prohibited psychotherapy includes cognitive behavioral therapy or psychodynamic therapy that focuses on exploring specific, dynamic causes of the phobic symptomatology and provides skills for their management. General supportive individual, couples, or family therapy greater than 2 months duration is acceptable.
  • Diagnosis of any of the following mental disorders as defined by the DSM-IV: a lifetime history of schizophrenia or any other psychosis, mental retardation, organic medical disorders or bipolar disorder; eating disorders in the past 6 months; alcohol or substance abuse in the past 3 months or dependence within the past 6 months.
  • Entry of patients with major depression, dysthymia, panic disorder, generalized anxiety disorder, post-traumatic stress disorder or obsessive-compulsive disorder will be permitted if the social anxiety disorder is judged to be the predominant disorder, in order to increase accrual of a clinically relevant sample.
  • Patients with significant suicidal ideation (MADRS item 10 score > 3) or who have enacted suicidal behaviors within 6 months prior to intake will be excluded from study participation and referred for appropriate clinical intervention.

Trial locations and contacts

1 site in 1 country.

United States1 site
  • Massachusetts General Hospital

    Boston, Massachusetts, 02114

Other trials in United States

About this study

The purpose of this study is to examine the safety and efficacy of duloxetine for the treatment of social anxiety disorder.

Read the detailed description

An expanding body of clinical experience and controlled trials has established the efficacy of serotonin selective reuptake inhibitors (SSRIs) and the serotonin norepinephrine reuptake inhibitor (SNRI) venlafaxine, for the treatment of social anxiety disorder, with paroxetine, sertraline and venlafaxine extended-release (XR), which are FDA approved for this indication. The newest SNRI, duloxetine, has been shown to be effective at doses of 60mg/day to 120mg/day for anxiety associated with depression, and is anticipated to be a broad spectrum agent for mood and anxiety disorders (Dunner, Goldstein, Mallinckrodt, Lu, \& Detke, 2003). However, no data on the efficacy of duloxetine for Social Anxiety Disorder, nor guidance regarding time to response or predictors of response, is yet available. These questions are the focus of this proposal.

This is a two phase, 24-week research study in which participants who remain symptomatic at the end of one phase (6 weeks) enter into the next phase. In phase I, all participants receive 60mg/day of duloxetine (Cymbalta) for 6 weeks. Participants who continue to have anxiety symptoms will enter the 18-week Phase II, in which they continue taking 60 mg/day of duloxetine and they will also be randomly assigned (by chance, like a flip of a coin) to receive either an additional 60mg/day of duloxetine or placebo (contains no active medication).

Being tested
Duloxetine, Placebo
Keywords
social anxiety disorder, social phobia, duloxetine, serotonin norepinephrine reuptake inhibitor, SNRI, double blind
Medical subject headings
Anxiety Disorders, Phobia, Social

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • DuloxetineDrug

    Also called Cymbalta

    60 mg duloxetine 1x per day

  • DuloxetineDrug

    Also called Cymbalta

    60 mg duloxetine 1x per day + 60mg duloxetine 1x per day

  • PlaceboDrug

    60mg placebo 1x per day

Study groups in NCT00114127
Study groupRoleWhat they receive
Duloxetine 60mg + Placebo for 18 WeeksPlacebo comparatorIn Phase 2 participants were randomized to 60mg Duloxetine + Placebo or 120mg Duloxetine.
Receives: Drug: Duloxetine; Drug: Placebo
Duloxetine 120mg for 18 WeeksActive comparatorIn Phase 2 participants were randomized to 60mg Duloxetine + Placebo or 120mg Duloxetine.
Receives: Drug: Duloxetine
Duloxetine 60mg/day for 6 WeeksActive comparatorIn Phase 1 all participants entered an open trial.
Receives: Drug: Duloxetine

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Anxiety Symptoms as Assessed by Liebowitz Social Anxiety Scale

    The Liebowitz Social Anxiety Scale (LSAS; Liebowitz, 1987) is a 24-item scale that provides separate scores for fear and avoidance in social and performance situations with higher scores representing increased social anxiety. The LSAS contains three total scores: 1) total fear score (0-72), 2) total avoidance score(0-72), 3) and total overall score (0-144). Suggested interpretations: 55-65 Moderate social phobia, 65-80 Marked social phobia, 80-95 Severe social phobia, Greater than 95 - Very severe social phobia.

    Measured: 6 months

Secondary outcomes (1)
  1. CGI-S

    The Clinician Global Impression-Severity Scale (CGI-S) is a clinician-rated instrument used to assess global severity of symptoms (Guy, 1976). The CGI ranges from 1 (normal, not at all ill) to 7 (among the most extremely ill patients).

    Baseline collected for Phase 1 at week 0 and for Phase 2 at week 6.

    Measured: 6 months

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted14 Jun 2005 (estimated)
  2. Study startJun 2004
  3. Primary completionNov 2008
  4. Study completionJul 2010

Resources

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 3
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Double blind
Who is masked
Participant, Care provider
Enrolment
28 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00114127
Sponsor's protocol ID
2004-P-001384
Status last verified
Jun 2014
First submitted
13 Jun 2005
Last updated
10 Jun 2014

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing Duloxetine in people with Anxiety Disorder, run by Massachusetts General Hospital 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 3 inclusion and 12 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 10 Jun 2014. 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 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

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 7 Jun 2012). 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?

Anxiety Symptoms as Assessed by Liebowitz Social Anxiety Scale (time frame: 6 months). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
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 10 Jun 2014.

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