Completed

A Multicenter, Randomized, Double-Blind, Placebo-Controlled, Parallel Group Study To Evaluate The Efficacy And Safety Of DVS-233 SR For Prevention Of Depressive Relapse In Adult Outpatients With Major Depressive Disorder

What is being tested

Data Collection

Who is being recruted

Mental Disorders+1

+ Depressive Disorder, Major

+ Depressive Disorder

From 18 to 75 Years

+6 Eligibility Criteria

See all eligibility criteria

How is the trial designed

Treatment Study

Phase 3

Interventional

See protocol details

Summary

Principal SponsorWyeth is now a wholly owned subsidiary of Pfizer

Last updated: January 27, 2026

Sourced from a government-validated database.Claim as a partner

Primary Objective: To compare the efficacy and safety of DVS-233 SR versus placebo treatment in reducing the relapse rate of depressive symptoms in subjects with major depressive disorder (MDD), and to compare the percentages of relapse in terms of time to relapse between DVS-233 SR and placebo treatment groups by using survival analysis. Secondary Objective: To assess the response of subjects on DVS-233 SR versus placebo for the clinical global evaluation, functionality, general well-being, pain, and absence of symptoms (Hamilton Psychiatric Rating Scale for Depression, 17-item \[HAM-D17\] < 7).

Official TitleA Multicenter, Randomized, Double-Blind, Placebo-Controlled, Parallel Group Study To Evaluate The Efficacy And Safety Of DVS-233 SR For Prevention Of Depressive Relapse In Adult Outpatients With Major Depressive Disorder

NCT00075257

Principal SponsorWyeth is now a wholly owned subsidiary of Pfizer

Last updated: January 27, 2026

Sourced from a government-validated database.Claim as a partner

Protocol

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

Design Details

603 patients to be enrolled

Total number of participants that the clinical trial aims to recruit.

Treatment Study

These studies test new ways to treat a disease, condition, or health issue. The goal is to see if a new drug, therapy, or approach works better or has fewer side effects than existing options.

Eligibility

Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.

Conditions

Criteria

Any sex

Biological sex of participants that are eligible to enroll.

From 18 to 75 Years

Range of ages for which participants are eligible to join.

Healthy volunteers not allowed

If individuals who are healthy and do not have the condition being studied can participate.

Conditions

Pathology

Mental DisordersDepressive Disorder, MajorDepressive DisorderMood Disorders

Criteria

3 inclusion criteria required to participate

Outpatients

Men and women 18 to 75 years of age, inclusive. Sexually active women participating in the study must use a medically acceptable form of contraception (Medically acceptable forms of contraception include oral contraceptives, injectable or implantable methods, intrauterine devices, or properly used barrier contraception)

Subjects must have a primary diagnosis of MDD based on the criteria in the Diagnostic and Statistical Manual of Mental Disorders, 4th edition (DSM-IV), single or recurrent episode, without psychotic features (If other allowable psychiatric diagnoses are present, MDD must be the predominant psychiatric disorder present.)

3 exclusion criteria prevent from participating

Treatment with DVS-233 SR at any time in the past

Treatment with venlafaxine (immediate release [IR] or ER) within 90 days of study day 1

Known hypersensitivity to venlafaxine (IR or ER)

Study Centers

These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.

This study has no location dataSave this study to your profile to know when the location data is available.

CompletedNo study centers