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Functional and Neurochemical Correlates of Treatment Response in Major Depressive Disorder

NCT01598324 · Status: TERMINATED · Type: OBSERVATIONAL · Enrollment: 1

Last updated 2013-08-13

No results posted yet for this study

Summary

This is an ancillary study to a clinical trial that is being conducted at Massachusetts General Hospital. Investigators at MGH are conducting a clinical trial to test the efficacy of ziprasidone together with escitalopram for treatment-resistant depression (NCT00633399). This observational study will involve magnetic resonance scans to examine brain chemistry (neurotransmitter levels), brain activity, and functional connections between brain regions before and after participating in the trial. The neurotransmitters of interest are glutamate, glutamine, and GABA. Comparisons will be made between individuals who receive ziprasidone and individuals who receive an inactive placebo. Differences between participants who respond to standard antidepressants and those who require additional medication will also be examined. All participants will have a baseline magnetic resonance scan before starting medication. The second scan will be after 8 weeks of escitalopram treatment for those who respond or following 8 weeks of escitalopram plus ziaprasidone or placebo (16 weeks after starting) for those who do not respond to escitalopram alone. Participants will complete standard rating scales for depression at each visit.

Conditions

  • Treatment-Resistant Depression

Sponsors & Collaborators

  • Pfizer

    collaborator INDUSTRY

  • Massachusetts General Hospital

    collaborator OTHER

  • Mclean Hospital

    lead OTHER

Eligibility

Min Age
18 Years
Max Age
65 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2012-07-31
Primary Completion
2013-04-30

Countries

  • United States

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT01598324 on ClinicalTrials.gov