Clinical Trial: Panic Disorder Study

This study is no longer recruiting patients.

Sponsored by: Wyeth
Information provided by: Wyeth


The primary objective of this study is to determine the efficacy, safety, and tolerability of a flexible dose of venlafaxine extended-release (ER) capsules administered for 10 weeks in the treatment of adult outpatients with panic disorder (PD) in a placebo-controlled phase III study.

Condition Treatment or Intervention Phase
Panic Disorder
 Drug: Venlafaxine ER
Phase III

MedlinePlus related topics:  Panic Disorder

Study Type: Interventional
Study Design: Treatment

Official Title: A double-blind, placebo-controlled, parallel-group, flexible-dose study of venlafaxine extended-release capsules in adult outpatients with panic disorder


Ages Eligible for Study:  18 Years and above,  Genders Eligible for Study:  Both


Inclusion Criteria:

  • A male or female outpatient.
  • Be at least 18 years of age and legal age of consent.
  • Meet DSM-IV criteria for PD (with or without agoraphobia) for at least 3 months before study day 1.
  • Have sufficient symptoms to require anxiolytic drug therapy.
  • Have a score of * 4 on the Clinical Global Impressions Scale (CGI) severity of illness item.
  • Have a minimum of 8 full-symptom panic attacks during the 4 weeks before the screening visit
  • Have a minimum of 4 full-symptom panic attacks during the 14*3 day placebo lead-in period between the screening and baseline (study day -1) visits.
  • Provide a signed and dated written informed consent.
  • Have a Covi Anxiety Scale total score greater than the Raskin Depression Scale total score.
  • Women of childbearing potential must have a negative serum pregnancy test at screening. The signed informed consent should reflect an awareness of the stipulations concerning the use of contraception. A woman of childbearing potential is defined as one who is biologically capable of becoming pregnant. This includes women who are using contraceptives or whose sexual partners are either sterile or using contraceptives. Sexually active women participating in the study must use a medically acceptable form of contraception. Medically acceptable forms of contraception include oral contraceptives, injectable or implantable methods, intrauterine devices, or properly used barrier contraception. Additionally, the use of condoms is suggested as an adjunct to the methods previously addressed to protect against sexually transmitted diseases and to provide additional protection against accidental pregnancy.

Exclusion Criteria:

  • Treatment with venlafaxine (IR or ER) within 6 months of study day 1.
  • Known hypersensitivity to venlafaxine (IR or ER) or related compounds.
  • History or presence of any clinically important hepatic, renal, or other medical disease that might compromise the study or be detrimental to the patient (eg, clinically important cardiac arrhythmia, unstable diabetes, carcinoma [except basal cell epithelioma], uncontrolled hypertension).
  • Clinically important abnormality on screening physical examination, vital signs, electrocardiogram (ECG), laboratory tests or urine drug screen.
  • Pregnancy, lactation, plans to become pregnant during the study.
  • Oral contraceptives that have been taken for less than 3 months before study day 1 if not using another medically accepted form of birth control.
  • Use of any herbal products intended to treat anxiety, insomnia or depression within 14 days of study day 1.
  • Myocardial infarction within 6 months of study day 1.
  • History or presence of a mental disorder due to a general medical condition.
  • History or presence of seizure disorder or a known history of more than 1 childhood febrile seizure.
  • History or presence of clinically important head trauma.
  • History or presence of any psychotic illness, bipolar affective disorder, or organic brain disease.
  • DSM-IV diagnosis of major depressive disorder, or generalized anxiety disorder (GAD) that is considered by the investigator as being primary, causing a higher degree of distress or impairment than PD. Patients with a diagnosis of secondary major depression, or GAD may be eligible provided other exclusionary requirements are not met.
  • Any other clinically significant Axis I or Axis II disorder current or predominant within 6 months of study day 1 other than PD (with or without agoraphobia).
  • Screening or baseline Hamilton Depression Rating Scale (HAM-D) score * 18.
  • Screening or baseline HAM-D item 1 (depressed mood) score > 2.
  • History of drug or alcohol dependence or abuse as defined in DSM-IV within 1 year of study day 1.
  • Regular use of alcohol (more than 24 ounces of beer/day or the equivalent).
  • Acutely suicidal to such a degree that precautions against suicide must be employed.
  • Urine drug screen positive for a drug of abuse.
  • A screening or baseline Raskin Depression Scale score greater than 3 on any single item or a screening or baseline Raskin total score >9.
  • Investigational drugs, investigational procedures, antipsychotics, fluoxetine (Prozac®), sumatriptan (Imitrex®), naratriptan (Amerge®), zolmitriptan (Zomig®), or drugs with a similar mechanism of action indicated for the treatment of migraine within 30 days of study day 1.
  • Regular use of benzodiazepines within 14 days of the screening visit.
  • Antidepressants (other than fluoxetine), monoamine oxidase inhibitors, nonbenzodiazepine anxiolytics within 14 days of study day 1.
  • Psychopharmacologic drugs (including anxiolytics, other antidepressants, lithium, stimulants, and sedative hypnotics other than zaleplon (Sonata®) or zolpidem (Ambien®)) within 14 days of study day 1.
  • Nonpsychopharmacologic drugs with psychotropic effects taken within 7 days of study day 1, unless taken at a stable dose for at least 3 months before study day 1.
  • Cognitive behavioral therapy within 30 days of study day 1.
  • Introduction or change in intensity of formal psychotherapy (regularly scheduled sessions employing specific techniques) within 60 days of study day 1.
  • Electroconvulsive therapy (ECT) within 6 months of study day 1.
  • Known history or presence of raised intraocular pressure or narrow angle glaucoma.

Location Information

      Birmingham Research Group Inc., Birmingham,  Alabama,  35216,  United States

      Southwestern Research, Inc., Beverly Hills,  California,  90210,  United States

      Irvine Center for Clinical Research, Irvine,  California,  92618,  United States

      Southwestern Research, Inc., Beverly Hills,  California,  90210,  United States

      Miami Research Associates, Miami,  Florida,  33173,  United States

      Baumel-Eisner, Ft. Lauderdale,  Florida,  33321,  United States

      Research Site, St. Petersburg,  Florida,  33702,  United States

      Research Site, Augusta,  Georgia,  30907,  United States

      Emory University, Atlanta,  Georgia,  30329 5102,  United States

      Atlanta Institute of Medicine and Research, Atlanta,  Georgia,  30076,  United States

      Vine Street Clinic, Springfield,  Illinois,  62701 1098,  United States

      Neuropsychiatric Assoc. of Illinois, Chicago,  Illinois,  60061,  United States

      Research Site, Rockville,  Maryland,  20852,  United States

      Massachusetts General Hospital, Boston,  Massachusetts,  02144,  United States

New Jersey
      Comprehensive Clinical Research CNS, P.C., Clementon,  New Jersey,  8021,  United States

      Psychopharmacology Research Association of Princeton, Princeton,  New Jersey,  08540,  United States

New York
      Montefiore Medical Center, Bronx,  New York,  10467,  United States

      Social Psychiatry Research Institute, New York,  New York,  10021,  United States

      Eastside Comprehensive Medical Services, New York,  New York,  10021,  United States

      Depression and Anxiety Institute, Mount Kisco,  New York,  10549,  United States

      Neurology Center of Ohio, Toledo,  Ohio,  43623,  United States

      Hartford Research Group, Cincinnati,  Ohio,  45229,  United States

      Allegheny Behavioral Health Science, Moon Township,  Pennsylvania,  15108,  United States

      Clinical Studies-Pittsburgh, Pittsburgh,  Pennsylvania,  15206,  United States

      Charlottesville Medical Research, Charlottesville,  Virginia,  22902,  United States

      Northwest Clinical Research Center, Bellevue,  Washington,  98004,  United States

      Seattle Clinical Research Center, Seattle,  Washington,  98104,  United States

      Northbrooke Research Center, Brown Deer,  Wisconsin,  53223,  United States

      Anxiety Disorder Clinic, Hamilton,  L8N 3Z5,  Canada

      Royal University Hospital, Saskatoon,  S7N OW8,  Canada

      Vancouver General Hospital, Vancouver,  V5Z 1M9,  Canada

Canada, British Columbia
      P.R. Latimer Medical Services, Inc., Kelowna,  British Columbia,  V1Y 2H4,  Canada

Canada, Quebec
      Q&T Recherche Inc., Sherbrooke,  Quebec,  J1H 4J6,  Canada

      Centre Hospitalier Universitaire de Quebec, Sainte-Foy,  Quebec,  GIV 4G2,  Canada

More Information

Study ID Numbers:  0600B5-353-US
Record last reviewed:  August 2004
Last Updated:  October 13, 2004
Record first received:  June 5, 2002 Identifier:  NCT00038896
Health Authority: United States: Food and Drug Administration processed this record on 2005-04-08

Cache Date: April 9, 2005