About Pricing FAQs Blog

Loading clinical trials...

Your health journey, clearly organized.

Find Clinical Trials →

Legal

Privacy Policy
Terms of Service

© 2026 Clareo Health. All rights reserved.

Back to clinical trial search

COMPLETEDNANCT00406952

Study for Evaluating Different Methods of Measuring Depression Treatment Response

Purpose of the study is to evaluate use of electronic diaries and voice acoustics for use in future depression clinical trial. Focus is on increased precision of measurement.

Lead sponsor: Pfizer•12 U.S. locations•View source on ClinicalTrials.gov

Clareo plain-language summary

What this study is about

Generating AI summary...

Save this trial guide to your notes

Keep your clinical trial research organized — questions to ask, what to expect, and key details.

Sponsors

Lead Sponsor

Pfizer

Age

18 - 65 years

Sex

ALL

Healthy Volunteers

No

Inclusion Criteria

•Primary diagnosis of Major Depressive Disorder with symptoms of depression present at least 1 month
•Psychotropic medications currently not being taken

Exclusion Criteria

•Failure to respond in past 5 years to antidepressant therapy of adequate duration and dosing
•Diagnoses of following conditions or disorders within past 6 months: generalized anxiety, obsessive compulsive, panic, post stress, anorexia, bulimia, alcohol or substance abuse or social anxiety disorder
•Diagnoses current or past of the following conditions or disorders: schizophrenia, psychotic disorder, delieium, dememtia, amnestic cognitive disorder, bipolar

Related studies

RECRUITINGPhase 3

A Study to Evaluate the Efficacy and Safety of Esketamine for Reduction of Symptoms of Major Depressive Disorder

NCT07227454 · Depressive Disorder, Major

RECRUITINGPhase 3

Roflumilast as an Adjunct to Antidepressants in Major Depressive Disorder Patients

NCT06860958 · Depressive Disorder, Major

bWell-D Pilot Randomized Controlled Trial

NCT06546917 · Depressive Disorder, Major, Cognitive Dysfunction

RECRUITINGPhase 3

A Study of Brenipatide in Adult Participants With Major Depressive Disorder

NCT07412756 · Depressive Disorder, Major

Comparing the Efficacy of fMRI-Guided vs. Standard iTBS in Treating Depression

NCT06152705 · Depression, Depressive Disorder, Major, and more

View all related studies →

Data from ClinicalTrials.govLast updated on ClinicalTrials.gov: August 21, 2008Terms

Trial snapshot

StatusCOMPLETED

PhaseNA

Enrollment165

Start dateNov 2006

Last updatedAug 21, 2008

Condition

Depressive Disorder, Major

Locations shown

Pfizer Investigational Site

Norwich, Connecticut

Pfizer Investigational Site

Aventura, Florida

Pfizer Investigational Site

Jacksonville, Florida

For caregivers

Use Clareo to keep notes, questions, trial details, and next steps organized before and after appointments.

Start free trial →

Data Source & Attribution

This clinical trial information is sourced from ClinicalTrials.gov, a service of the U.S. National Institutes of Health.

ClinicalTrials.gov last update: August 21, 2008Data synced to Clareo: June 28, 2026

Modifications: This data has been reformatted for display purposes. Eligibility criteria have been parsed into inclusion/exclusion sections. Location data has been geocoded to enable distance-based search. For the authoritative and most current information, please visit ClinicalTrials.gov.

Neither the United States Government nor Clareo Health make any warranties regarding the data. Check ClinicalTrials.gov frequently for updates.

View ClinicalTrials.gov Terms and Conditions