Ethnic Variations in Antidepressant Response

August 3, 2009 updated by: National Institute of Mental Health (NIMH)
This 11-week study aims to determine how genetic factors affect the way African Americans and Caucasians with major depression respond to antidepressant medication [citalopram (Celexa®)].

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Depressed patients vary substantially in their responses to antidepressants. Genetic factors may account for a large part of these differences in response. This study will include both African Americans and Caucasians to examine the role of genetic factors in treatment response.

Participants receive citalopram (Celexa) for 8 weeks and a placebo for 1 week. Visits occur once a week for 11 weeks. A variety of interviews, scales, tests, and questionnaires are used to assess participants.

Study Type

Interventional

Enrollment (Anticipated)

400

Phase

  • Phase 4

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • California
      • Los Angeles, California, United States, 90048
        • Cedars-Sinai Medical Center, Department of Psychiatry, Clinical Trials Unit
      • Los Angeles, California, United States, 90059
        • UCLA/King-Drew
      • Torrance, California, United States, 90502
        • Harbor-UCLA Medical Center

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 70 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • DSM-IV criteria for Major Depression
  • African-American or Caucasian ethnic background (both parents and 3 out of 4 grandparents)

Exclusion Criteria:

  • Schizophrenia, schizophreniform disorder, schizoaffective disorder, schizotypal disorder, psychotic depression, or bipolar disorder
  • Current drug abuse or history of drug abuse within the past 6 months
  • Unstable medical or neurological conditions that interfere with the treatment of depression
  • Allergy to citalopram
  • Failure to respond to adequate citalopram drug trial (40 mg for at least 6 weeks)
  • Seizure disorder
  • Pregnancy
  • Psychotropic medications, including antidepressants and neuroleptics
  • Suicidal ideation or other safety issues
  • Fluoxetine (Prozac) or MAOIs (Nardil, Parnate) in the last 2 months
  • Ongoing cognitive behavioral therapy or intensive psychotherapy. General talk therapy is acceptable

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Non-Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: Citalopram
All subjects receive an FDA approved dose of Citalopram
Drug: Citalopram
PDA Approved antidepressant

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Hamilton Rating Scale for Depression
Time Frame: Measured weekly for 11 weeks
Measured weekly for 11 weeks

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

National Institute of Mental Health (NIMH)

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

June 1, 2002

Primary Completion (Actual)

November 1, 2006

Study Completion (Actual)

November 1, 2006

Study Registration Dates

First Submitted

October 11, 2002

First Submitted That Met QC Criteria

October 15, 2002

First Posted (Estimate)

October 16, 2002

Study Record Updates

Last Update Posted (Estimate)

August 4, 2009

Last Update Submitted That Met QC Criteria

August 3, 2009

Last Verified

August 1, 2009

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • R01MH062531 (U.S. NIH Grant/Contract)
  • EVA-00183-02
  • DATR A5-ETMA (Other Identifier: NIH)

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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