CClinicalTrials.gg
TerminatedNCT00735267Updated Nov 16, 2012

A 52-Week Open-Label Safety Study of PD 0332334 in Subjects With Generalized Anxiety Disorder (GAD)

A Phase 3 interventional study of PD 0332334 in Generalized Anxiety Disorder, sponsored by Pfizer. Terminated at 93 sites in United States. Open to participants aged 18 Years to 65 Years. Per ClinicalTrials.gov, last updated 2012-11-16.

Sponsored by Pfizer · Phase 3, Interventional, and Treatment

Why this study was terminated
Please see Detailed Description for termination reason.
Phase
Phase 3
Study type
Interventional
Enrollment
468
Allocation
Non-randomized
Ages
18 Years to 65 Years
Sex
All
01

Study summary

This study will assess the long-term safety and tolerability of 350 to 600 mg/day of PD 0332334 administered in split dose (twice daily) in subjects with Generalized Anxiety Disorder.

Read the detailed description

Termination reason: On February 23rd 2009, a decision to terminate further development for PD 0332334 was communicated to investigators in this study. The decision to terminate this study was not based on any safety concerns.

02

Conditions studied

  • Generalized Anxiety Disorder

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Keywords

  • Generalized Anxiety Disorder
03

In context

Anxiety Disorders

4,868 studies on the registry are indexed under Anxiety Disorders; 1,390 are open to participants now.

This study's enrollment of 468 is above the median of 80 across 4,174 interventional studies indexed under Anxiety Disorders.

Browse Anxiety Disorders studies →

Lead sponsor

Pfizer is the lead sponsor of 3,244 studies on the registry; 139 are open to participants now.

Of its 582 completed or terminated interventional studies of FDA-regulated products, 381 (65%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Subjects must have completed all phases of one of the four preceding double-blind GAD studies.
  • Female must continue to use adequate birth control methods and have a negative serum pregnancy test within 14 days prior to starting open label treatment.

Exclusion criteria

Exclusion Criteria:

  • Subjects who experienced a serious adverse event during the preceding double-blind efficacy study that was judged to be related to study medication by the investigator or the sponsor's medical monitor.
  • Individuals who have an ongoing, unresolved, clinically significant medical problem that, in the judgment of the investigator or the sponsor's medical monitor, would make it unsafe for the subject to participate in the study.
  • Serious suicidal risk per the clinical investigators's judgement.
05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Single group
Masking
None (open label)
Enrollment
468 participants (actual)

Interventions

  • DrugPD 0332334

    Dosage Form: 25 or 100 mg oral capsules Dosage and frequency: 350-600 mg twice a day Duration: 1 year

    Also known as: imagabalin

06

What researchers measure

Primary outcomes

  1. The nature, incidence, and duration of adverse events monitored throughout the study by physical exam

    Time frame: Screening, Wk 25 & Wk 52/EOT

  2. Electrocardiogram will be performed at screening and during follow up visits to assess the safety and tolerability of the compound in terms of clinically significant cardiovascular changes

    Time frame: Screening, Wk 4, Wk 25, Wk 52/EOT

  3. The Columbia Suicide Severity Rating scale will be used to assess any suicide related adverse events

    Time frame: As needed

  4. The nature, incidence, and duration of adverse events monitored throughout the study by vital signs evaluation at each visit, weight measurements and clinical laboratory monitoring periodically

    Time frame: Screening, Baseline, Wk 4, Wk 12, Wk 25, Wk 38, & Wk 52/EOT

  5. All discontinuations due to adverse events will be reviewed throughout the trial to assess the safety and tolerability of the compound

    Time frame: Weekly

Secondary outcomes

  1. The Hamilton Rating Scale for Anxiety (HAM-A) will be used to assess symptoms of Generalized Anxiety Disorder (GAD) over a one year time period.

    Time frame: Baseline, Wk 12, Wk 25, Wk 38, Wk 51 & Wk 52/EOT

  2. The Clinical Global Impression of Severity (CGI-S), and the Daily Diary (DD) will also be used to assess symptoms of GAD over a one year time period.

    Time frame: Baseline, Wk 51 & Wk 52/EOT

  3. The Health Care Utilization Questionnaire will be utilized to assess overall Health Care over a one year time period.

    Time frame: Baseline, Wk 12, Wk 25, Wk 38 & Wk 51

07

Study locations

93 sites
  • Pfizer Investigational Site
    Birmingham, Alabama 35226, United States
  • Pfizer Investigational Site
    Litchfield Park, Arizona 85340, United States
  • Pfizer Investigational Site
    Arcadia, California 91007-3462, United States
  • Pfizer Investigational Site
    Beverly Hills, California 90210, United States
  • Pfizer Investigational Site
    Costa Mesa, California 92626, United States
  • Pfizer Investigational Site
    Costa Mesa, California 92627, United States
  • Pfizer Investigational Site
    Encino, California 91316, United States
  • Pfizer Investigational Site
    Escondido, California 92025, United States
  • Pfizer Investigational Site
    Murrieta, California 92562, United States
  • Pfizer Investigational Site
    National City, California 91950, United States
  • Pfizer Investigational Site
    Newport Beach, California 92660-2452, United States
  • Pfizer Investigational Site
    Orange, California 92868, United States
  • Pfizer Investigational Site
    Pasadena, California 91106, United States
  • Pfizer Investigational Site
    Redlands, California 92374, United States
  • Pfizer Investigational Site
    San Diego, California 92103, United States
  • Pfizer Investigational Site
    San Diego, California 92108, United States
  • Pfizer Investigational Site
    Sherman Oaks, California 91403, United States
  • Pfizer Investigational Site
    Temecula, California 92591, United States
  • Pfizer Investigational Site
    Upland, California 91786, United States
  • Pfizer Investigational Site
    Wildomar, California 92595, United States
  • Pfizer Investigational Site
    Denver, Colorado 80239, United States
  • Pfizer Investigational Site
    Hamden, Connecticut 06518, United States
  • Pfizer Investigational Site
    Norwich, Connecticut 06360, United States
  • Pfizer Investigational Site
    Altamonte Springs, Florida 32701, United States
  • Pfizer Investigational Site
    Ft. Myers, Florida 33912, United States
  • Pfizer Investigational Site
    Jacksonville, Florida 32216, United States
  • Pfizer Investigational Site
    Maitland, Florida 32751, United States
  • Pfizer Investigational Site
    Miami, Florida 33126, United States
  • Pfizer Investigational Site
    Miami, Florida 33143, United States
  • Pfizer Investigational Site
    Orange City, Florida 32763, United States
  • Pfizer Investigational Site
    Orlando, Florida 32806, United States
  • Pfizer Investigational Site
    South Miami, Florida 33143, United States
  • Pfizer Investigational Site
    West Palm Beach, Florida 33407, United States
  • Pfizer Investigational Site
    Atlanta, Georgia 30308, United States
  • Pfizer Investigational Site
    Atlanta, Georgia 30328, United States
  • Pfizer Investigational Site
    Marietta, Georgia 30060, United States
  • Pfizer Investigational Site
    Libertyville, Illinois 60048, United States
  • Pfizer Investigational Site
    Naperville, Illinois 60563, United States
  • Pfizer Investigational Site
    Park Ridge, Illinois 60068, United States
  • Pfizer Investigational Site
    Greenwood, Indiana 46143, United States
  • Pfizer Investigational Site
    Terre Haute, Indiana 47802, United States
  • Pfizer Investigational Site
    Overland Park, Kansas 66212, United States
  • Pfizer Investigational Site
    Prairie Village, Kansas 66206, United States
  • Pfizer Investigational Site
    Wichita, Kansas 67207, United States
  • Pfizer Investigational Site
    Owensboro, Kentucky 42301, United States
  • Pfizer Investigational Site
    Lake Charles, Louisiana 70601, United States
  • Pfizer Investigational Site
    Baltimore, Maryland 21208, United States
  • Pfizer Investigational Site
    Belmont, Massachusetts 02478, United States
  • Pfizer Investigational Site
    Boston, Massachusetts 02135, United States
  • Pfizer Investigational Site
    Fall River, Massachusetts 02721, United States
  • Pfizer Investigational Site
    Haverhill, Massachusetts 01830, United States
  • Pfizer Investigational Site
    Pittsfield, Massachusetts 01201, United States
  • Pfizer Investigational Site
    Omaha, Nebraska 68131, United States
  • Pfizer Investigational Site
    Las Vegas, Nevada 89146, United States
  • Pfizer Investigational Site
    Nashua, New Hampshire 03060, United States
  • Pfizer Investigational Site
    Albuquerque, New Mexico 87109, United States
  • Pfizer Investigational Site
    Bronx, New York 10467, United States
  • Pfizer Investigational Site
    Brooklyn, New York 11235, United States
  • Pfizer Investigational Site
    New York, New York 10023, United States
  • Pfizer Investigational Site
    New York, New York 10024, United States
  • Pfizer Investigational Site
    New York, New York 10128-1708, United States
  • Pfizer Investigational Site
    Rochester, New York 14618, United States
  • Pfizer Investigational Site
    Raleigh, North Carolina 27607, United States
  • Pfizer Investigational Site
    Columbus, Ohio 43210, United States
  • Pfizer Investigational Site
    Dayton, Ohio 45408, United States
  • Pfizer Investigational Site
    Toledo, Ohio 43609, United States
  • Pfizer Investigational Site
    Toledo, Ohio 43623, United States
  • Pfizer Investigational Site
    Bethany, Oklahoma 73008, United States
  • Pfizer Investigational Site
    Oklahoma City, Oklahoma 73103, United States
  • Pfizer Investigational Site
    Oklahoma City, Oklahoma 73116, United States
  • Pfizer Investigational Site
    Portland, Oregon 97210, United States
  • Pfizer Investigational Site
    Salem, Oregon 97301, United States
  • Pfizer Investigational Site
    Allentown, Pennsylvania 18104, United States
  • Pfizer Investigational Site
    Media, Pennsylvania 19063, United States
  • Pfizer Investigational Site
    Norristown, Pennsylvania 19401, United States
  • Pfizer Investigational Site
    Philadelphia, Pennsylvania 19139, United States
  • Pfizer Investigational Site
    Lincoln, Rhode Island 02865, United States
  • Pfizer Investigational Site
    Columbia, South Carolina 29201, United States
  • Pfizer Investigational Site
    Memphis, Tennessee 38119, United States
  • Pfizer Investigational Site
    Memphis, Tennessee 38134, United States
  • Pfizer Investigational Site
    Austin, Texas 78756, United States
  • Pfizer Investigational Site
    Dallas, Texas 75230, United States
  • Pfizer Investigational Site
    Dallas, Texas 75231, United States
  • Pfizer Investigational Site
    DeSoto, Texas 75115, United States
  • Pfizer Investigational Site
    Houston, Texas 77008, United States
  • Pfizer Investigational Site
    Houston, Texas 77074, United States
  • Pfizer Investigational Site
    Lake Jackson, Texas 77566, United States
  • Pfizer Investigational Site
    San Antonio, Texas 78229, United States
  • Pfizer Investigational Site
    Woodstock, Vermont 05091, United States
  • Pfizer Investigational Site
    Charlottesville, Virginia 22903, United States
  • Pfizer Investigational Site
    Seattle, Washington 98104, United States
  • Pfizer Investigational Site
    Middleton, Wisconsin 53562, United States
  • Pfizer Investigational Site
    Waukesha, Wisconsin 53188-1660, United States
08

References and documents

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Nov 16, 2012, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT00735267
Lead sponsor
Pfizer
First posted
Aug 14, 2008
Start date
Oct 2008
Primary completion
Apr 2009
Completion
Apr 2009
Last update
Nov 16, 2012

Study contacts

Pfizer CT.gov Call Center
study director · Pfizer

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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This study is terminated, as verified in Nov 2012. You cannot join it, but the record below documents what was studied.

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