A Comparison of Fluoxetine and Divalproex for the Treatment of Intermittent Explosive Disorder

NCT ID: NCT00078754

Last Updated: 2021-04-27

Study Results

Results available

Outcome measurements, participant flow, baseline characteristics, and adverse events have been published for this study.

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Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE2

Total Enrollment

90 participants

Study Classification

INTERVENTIONAL

Study Start Date

2003-05-31

Study Completion Date

2008-10-31

Brief Summary

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This study will compare the medications fluoxetine (Prozac®) and divalproex (Depakote®) for the treatment of aggressive behavior in individuals with Intermittent Explosive Disorder (IED).

Detailed Description

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IED is a condition characterized by a failure to resist aggressive impulses. IED is a behavioral defined condition for which effective treatments have not been identified. Research suggests that serotonin (5-HT), a chemical that helps regulate mood and emotions, may play a role in the response to pharmacological IED treatments. This study will examine the relationship between 5-HT receptors and response to treatment with fluoxetine or divalproex. In addition, this study will examine people with IED and those without the condition to determine whether there are differences in their 5-HT receptor and transporter systems.

Participants in this study will be randomly assigned to receive either fluoxetine, divalproex, or placebo for 12 weeks. Scale ratings will be used to assess the aggression levels of participants. Biologic evaluations of the 5-HT system will be conducted throughout the study.

Conditions

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Intermittent Explosive Disorder

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Participants Investigators

Study Groups

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A

Participants will to receive treatment with fluoxetine for 12 weeks

Group Type EXPERIMENTAL

Fluoxetine

Intervention Type DRUG

Fluoxetine capsules by mouth, up to 60 mg daily

B

Participants will to receive treatment with divalproex for 12 weeks

Group Type EXPERIMENTAL

Divalproex

Intervention Type DRUG

Divalproex ER capsules by mouth, up to 3000 mg daily

C

Participants will to receive treatment with placebo for 12 weeks

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type DRUG

Placebo capsules by mouth, up to 8 capsules daily

Interventions

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Fluoxetine

Fluoxetine capsules by mouth, up to 60 mg daily

Intervention Type DRUG

Divalproex

Divalproex ER capsules by mouth, up to 3000 mg daily

Intervention Type DRUG

Placebo

Placebo capsules by mouth, up to 8 capsules daily

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* Diagnosis of Intermittent Explosive Disorder (IED)
* In good physical health
* Overt Aggression Scale-Modified (OAS-M) score of 15 or higher at screening
* Willing and able to comply with the study requirements

Exclusion Criteria

* Life history of bipolar disorder, schizophrenia, organic mental syndrome, or mental retardation
* Current major depressive disorder, with a Hamilton Depression (HAM-D) Scale score higher than 18
* Current alcohol or drug abuse or dependence
* Active medical conditions that will interfere with the study
* Thymoleptic or neuroleptic treatments
* Presence of the following serious and active medical conditions: demyelinating or progressive degenerative disorders; central nervous system infection; progressive degenerative neurological disorder; ischemic heart disease; respiratory, renal, or liver disease; Type I diabetes; malignant neoplasm; hyper- or hypo-coagulopathy; Acquired Immune Deficiency Syndrome (AIDS); or seizure disorder. Participants with a history of more than two febrile seizures prior to 1 year of age are eligible.
* Chronic, ongoing treatment with the following classes of medications: antidepressants, neuroleptics, mood stabilizers, antianxiety agents, hypnotics, narcotics or synthetic narcotics, barbiturates, stimulants, anti-migraine agents, anti-epileptics, non-beta-blocking or Ca-channel blocking anti-arrhythmic agents prescribed to treat cardiac arrhythmia, anticoagulants, immunomodulators, anti-neoplastic agents, or HIV antiviral agents
* Ongoing psychotherapeutic treatment for the treatment of IED or anger that was started less than 3 months before study entry
* Hypersensitivity to fluoxetine or divalproex
* Pregnancy
Minimum Eligible Age

21 Years

Maximum Eligible Age

55 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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National Institute of Mental Health (NIMH)

NIH

Sponsor Role collaborator

University of Chicago

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Emil F. Coccaro, MD

Role: PRINCIPAL_INVESTIGATOR

University of Chicago

Locations

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The University of Chicago

Chicago, Illinois, United States

Site Status

Countries

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United States

Other Identifiers

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R01MH066984

Identifier Type: NIH

Identifier Source: secondary_id

View Link

DATR A5-ETMA

Identifier Type: -

Identifier Source: secondary_id

R01MH066984

Identifier Type: NIH

Identifier Source: org_study_id

View Link

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