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Quetiapine Augmentation Versus Clomipramine Augmentation of SSRI for Obsessive-Compulsive Disorder Patients (QCAT)
This study has been completed.
First Received: November 26, 2007   Last Updated: February 4, 2008   History of Changes
Sponsor: University of Sao Paulo
Collaborator: CNPq
Information provided by: University of Sao Paulo
ClinicalTrials.gov Identifier: NCT00564564
  Purpose

The objective of this trial is to compare in an open trial format the efficacy of association of clomipramine and quetiapine with SSRI after SSRI treatment failed to produce complete remission of obsessive compulsive disorder symptoms.


Condition Intervention Phase
Obsessive Compulsive Disorder
Drug: Quetiapine
Drug: Clomipramine
Phase IV

Study Type: Interventional
Study Design: Treatment, Randomized, Single Blind (Outcomes Assessor), Active Control, Parallel Assignment, Safety/Efficacy Study
Official Title: Quetiapine Augmentation Versus Clomipramine Augmentation of Selective Serotonin Reuptake Inhibitors for Obsessive-Compulsive Disorder Patients That do Not Respond to a SSRI Trial: a Randomized Open-Trial.

Resource links provided by NLM:


Further study details as provided by University of Sao Paulo:

Primary Outcome Measures:
  • difference between initial and final (12 week) Yale Brown Obsessive Compulsive Scale (YBOCS)score [ Time Frame: 12 weeks ] [ Designated as safety issue: No ]

Secondary Outcome Measures:
  • Clinical Global Impression score for improvement [ Time Frame: 12 weeks ] [ Designated as safety issue: No ]
  • adverse events measure (emphasis in serotonergic syndrome) [ Time Frame: weeks 0,2,4,8 and 12 ] [ Designated as safety issue: Yes ]
  • Changes in baseline (week 0) EKG regarding QT interval [ Time Frame: week 0 and 2 ] [ Designated as safety issue: Yes ]

Enrollment: 21
Study Start Date: January 2006
Study Completion Date: December 2007
Primary Completion Date: December 2007 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
1: Experimental
Quetiapine plus SSRI
Drug: Quetiapine
Quetiapine once a day at maximum dosage of 200mg per day asociated to a SSRI (maximum dosage of 40mg per day for fluoxetine; 200mg per day for sertraline and 60mg per day for citalopram)
2: Active Comparator
Clomipramine plus SSRI
Drug: Clomipramine
Clomipramine once a day at maximum dosage of 75mg per day plus SSRI (maximum dosage of 40mg per day for fluoxetine; 200mg per day for sertraline and 60mg per day for citalopram)

Detailed Description:

The objective of this trial wis to compare in an randomized open trial format the efficacy of association of clomipramine at maximum dosage of 75mg per day and quetiapine at maximum dosage of 200mg per day with SSRI after SSRI treatment for 12 weeks failed to produce complete remission of OCD symptoms.

  Eligibility

Ages Eligible for Study:   18 Years to 65 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • primary OCD diagnosis according to DSM IV criteria
  • current symptoms were responsible for significant distress
  • previous trial of at least 12 weeks with SSRI (being at least 8 weeks at maximum tolerated dosage) failed to produce full remission of OCD symptoms

Exclusion Criteria:

  • presence of clinical or neurological diseases that may be worsen by the medications included in treatment protocol
  • current substance dependence or abuse,
  • current psychotic symptoms
  • current suicide risk
  • and current pregnancy or intention to get pregnant before the end of the treatment protocol
  Contacts and Locations
Please refer to this study by its ClinicalTrials.gov identifier: NCT00564564

Locations
Brazil, SP
Institute of Psychiatry, Clinics Hospital, University of São Paulo Medical School
São Paulo, SP, Brazil, 05403-010
Sponsors and Collaborators
University of Sao Paulo
CNPq
Investigators
Principal Investigator: Juliana B Diniz, MD Department of Psychiatry University of São Paulo Medical School
  More Information

Additional Information:
Publications:
Responsible Party: University of São Paulo ( Juliana Belo Diniz )
Study ID Numbers: 968/05, 2005/55628-08 (FAPESP)
Study First Received: November 26, 2007
Last Updated: February 4, 2008
ClinicalTrials.gov Identifier: NCT00564564     History of Changes
Health Authority: Brazil: National Health Surveillance Agency

Keywords provided by University of Sao Paulo:
obsessive compulsive disorder
pharmacological treatment
quetiapine
clomipramine
SSRI

Additional relevant MeSH terms:
Neurotransmitter Agents
Neurotransmitter Uptake Inhibitors
Tranquilizing Agents
Disease
Molecular Mechanisms of Pharmacological Action
Clomipramine
Physiological Effects of Drugs
Psychotropic Drugs
Central Nervous System Depressants
Antipsychotic Agents
Serotonin Uptake Inhibitors
Pharmacologic Actions
Antidepressive Agents, Tricyclic
Quetiapine
Serotonin Agents
Pathologic Processes
Anxiety Disorders
Mental Disorders
Therapeutic Uses
Central Nervous System Agents
Obsessive-Compulsive Disorder
Antidepressive Agents

ClinicalTrials.gov processed this record on November 27, 2009