Study of the Safety and Efficacy of Fixed Dose OPC-34712 as Adjunctive Therapy in the Treatment of Adults With Major Depressive Disorder (the Pyxis Trial)

This study has been completed.
Sponsor:
Information provided by (Responsible Party):
Otsuka Pharmaceutical Development & Commercialization, Inc.
ClinicalTrials.gov Identifier:
NCT01360645
First received: May 24, 2011
Last updated: June 7, 2013
Last verified: June 2013
  Purpose

To compare the effect of OPC-34712 (brexpiprazole) to the effect of placebo (an inactive substance) as add on treatment to an assigned FDA approved antidepressant treatment (ADT) in patients with Major Depressive Disorder who demonstrate an incomplete response to a prospective trial of the same assigned FDA approved ADT


Condition Intervention Phase
Depressive Disorder
Depression
Depressive Disorder, Major
Mood Disorders
Mental Disorders
Drug: OPC-34712 + ADT
Drug: Placebo + ADT
Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Caregiver, Investigator)
Primary Purpose: Treatment
Official Title: A Phase 3, Multicenter, Randomized, Double-blind, Placebo-controlled Trial of the Safety and Efficacy of Fixed Dose OPC-34712 as Adjunctive Therapy in the Treatment of Adults With Major Depressive Disorder, the Pyxis Trial

Resource links provided by NLM:


Further study details as provided by Otsuka Pharmaceutical Development & Commercialization, Inc.:

Primary Outcome Measures:
  • Change in Montgomery-Asberg Depression Rating Scale (MADRS) Total Score from randomization to the end of treatment [ Time Frame: Week 14 ] [ Designated as safety issue: No ]

Secondary Outcome Measures:
  • Change in Sheehan Disability Scale (SDS) from randomization to end of treatment [ Time Frame: Week 14 ] [ Designated as safety issue: No ]

Enrollment: 826
Study Start Date: July 2011
Study Completion Date: June 2013
Primary Completion Date: May 2013 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Phase B

Drug: OPC-34712 + ADT

Drug: Placebo + ADT

Drug: OPC-34712 + ADT
Tablet, Oral, 2 mg OPC-34712 and FDA Approved Antidepressant Therapy (ADT)
Drug: Placebo + ADT
Placebo + FDA Approved Antidepressant (ADT)
Placebo Comparator: Phase A
Intervention: Drug: Placebo + ADT
Drug: Placebo + ADT
Placebo + FDA Approved Antidepressant (ADT)

  Eligibility

Ages Eligible for Study:   18 Years to 65 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Male or female subjects between 18 and 65 years of age, with diagnosis of major depressive disorder, as defined by DSM-IV-TR criteria
  • The current depressive episode must be equal to or greater than 8 weeks in duration
  • Subjects must report a history for the current depressive episode of an inadequate response to no more than three adequate antidepressant treatments

Exclusion Criteria:

  • Females who are breast-feeding and/or who have a positive pregnancy test result prior to receiving study drug
  • Subjects who report an inadequate response to more than three adequate trials of antidepressant treatments during current depressive episode at a therapeutic dose for an adequate duration.
  • Subjects with a current Axis I (DSM-IV-TR) diagnosis of: Delirium, dementia, amnestic or other cognitive disorder, Schizophrenia, schizoaffective disorder, or other psychotic disorder, Bipolar I or II disorder
  • Subjects with a clinically significant current Axis II (DSM-IV-TR) diagnosis of borderline, antisocial, paranoid, schizoid, schizotypal or histrionic personality disorder
  Contacts and Locations
Please refer to this study by its ClinicalTrials.gov identifier: NCT01360645

  Show 57 Study Locations
Sponsors and Collaborators
Otsuka Pharmaceutical Development & Commercialization, Inc.
  More Information

No publications provided

Responsible Party: Otsuka Pharmaceutical Development & Commercialization, Inc.
ClinicalTrials.gov Identifier: NCT01360645     History of Changes
Other Study ID Numbers: 331-10-228
Study First Received: May 24, 2011
Last Updated: June 7, 2013
Health Authority: United States: Food and Drug Administration
France: Ministry of Health
Canada: Health Canada
Slovakia: State Institute for Drug Control
Poland: Ministry of Health

Keywords provided by Otsuka Pharmaceutical Development & Commercialization, Inc.:
OPC-34712
brexpiprazole
Major Depressive Disorder
Adjunctive Treatment

Additional relevant MeSH terms:
Mental Disorders
Psychotic Disorders
Depression
Depressive Disorder
Depressive Disorder, Major
Mood Disorders
Schizophrenia and Disorders with Psychotic Features
Behavioral Symptoms

ClinicalTrials.gov processed this record on April 22, 2014