Safety and Efficacy of Cariprazine as an Adjunctive to Antidepressant Therapy in Major Depressive Disorder
![]() |
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. |
ClinicalTrials.gov Identifier: NCT01469377 |
Recruitment Status :
Completed
First Posted : November 10, 2011
Results First Posted : May 1, 2018
Last Update Posted : May 1, 2018
|
- Study Details
- Tabular View
- Study Results
- Disclaimer
- How to Read a Study Record
Condition or disease | Intervention/treatment | Phase |
---|---|---|
Major Depressive Disorder | Drug: Placebo Drug: Cariprazine | Phase 2 |
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 819 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor) |
Primary Purpose: | Treatment |
Official Title: | A Double-Blind, Placebo-Controlled Study of Cariprazine (RGH-188) as Adjunctive Therapy in Major Depressive Disorder |
Actual Study Start Date : | December 15, 2011 |
Actual Primary Completion Date : | December 12, 2013 |
Actual Study Completion Date : | December 12, 2013 |

Arm | Intervention/treatment |
---|---|
Placebo Comparator: Placebo
Participants received placebo orally once a day for 8 weeks. Each participant continued to take the same dose of antidepressant therapy (bupropion, citalopram, desvenlafaxine, duloxetine, escitalopram, fluoxetine, sertraline, venlafaxine, or vilazodone) the participant was receiving prior to entering this study throughout treatment.
|
Drug: Placebo
Placebo was supplied in capsules |
Experimental: Cariprazine 1-2 mg
Participants received cariprazine orally once a day for 8 weeks. Participants received cariprazine 0.5 mg on Days 1 and 2 and 1.0 mg on Days 3-7. At the investigator's discretion dose levels could be increased during Week 2. Dose levels allowed during Week 2 were 1.0 or 1.5 mg. A second dose increase was allowed starting at Week 3. Dose levels allowed during Week 3 and the remainder of the treatment period were 1.0, 1.5, or 2.0 mg. Each participant continued to take the same dose of antidepressant therapy (bupropion, citalopram, desvenlafaxine, duloxetine, escitalopram, fluoxetine, sertraline, venlafaxine, or vilazodone) the participant was receiving prior to entering this study throughout treatment.
|
Drug: Cariprazine
Cariprazine was supplied in capsules. |
Experimental: Cariprazine 2-4.5 mg
Participants received cariprazine orally once a day for 8 weeks. Participants received cariprazine 0.5 mg on Days 1 and 2, 1.0 mg on Day 3, 1.5 mg on Day 4, and 2.0 mg on Days 5-7. At the investigator's discretion dose levels could be increased during Week 2. Dose levels allowed during Week 2 were 2.0 or 3.0 mg. A second dose increase was allowed starting at Week 3. Dose levels allowed during Week 3 and the remainder of the treatment period were 2.0, 3.0, or 4.5 mg. Each participant continued to take the same dose of antidepressant therapy (bupropion, citalopram, desvenlafaxine, duloxetine, escitalopram, fluoxetine, sertraline, venlafaxine, or vilazodone) the participant was receiving prior to entering this study throughout treatment.
|
Drug: Cariprazine
Cariprazine was supplied in capsules. |
- Change From Baseline in the Montgomery-Åsberg Depression Rating Scale (MADRS) Total Score at Week 8 [ Time Frame: Baseline to Week 8 ]The MADRS is a clinician-rated scale to assess depressive symptomatology during the preceding week. Participants are rated on 10 items (feelings of sadness, lassitude, pessimism, inner tension, suicidality, reduced sleep or appetite, difficulty concentrating, and lack of interest) each on a 7-point scale from 0 (no symptoms) to 6 (symptoms of maximum severity). The total score ranges from 0 to 60 with a higher score indicating more depression. A negative change score indicates improvement.
- Change From Baseline in the Sheehan Disability Scale (SDS) Total Score at Week 8 [ Time Frame: Baseline to Week 8 ]The SDS measures an individual's perception of the extent to which his or her emotional symptoms are disrupting his or her functioning in 3 domains, work/school, social life/leisure activities, and family life/home responsibilities. The participant is asked to rate the degree to which their functioning is impaired on an 11-point scale, ranging from 0 (not at all) to 10 (extremely). Scores of 0 to 3 indicate mild functional impairment, 4 to 6 indicate moderate functional impairment, and 7 to 9 indicate marked functional impairment. The scores for the 3 domains are summed into a total score that ranges from 0 (unimpaired) to 30 (highly impaired). A higher score indicates greater impairment. A negative change score indicates improvement.

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | 18 Years to 65 Years (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Male or female outpatients 18 to 65 years of age, inclusive.
- Currently meet the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision (DSM-IV-TR) criteria for moderate to severe major depressive disorder (MDD).
- Current major depressive episode of at least 8 weeks and not exceeding 24 months in duration.
- Ongoing inadequate response to protocol allowed antidepressant therapy (ADT).
Exclusion Criteria:
- Principal DSM-IV-TR-based diagnosis of an axis I disorder, other than MDD,
- Women who are pregnant, or planning to become pregnant or breastfeed during the study or not practicing reliable contraception that will continue through out the study.
-
History of meeting DSM-IV-TR criteria for:
- Depressive episode with psychotic or catatonic features.
- Manic, hypomanic or mixed episode, including bipolar disorder and substance induced manic, hypomanic or mixed episode.
- Schizophrenia, schizoaffective, or other psychotic disorder.
- Obsessive-compulsive disorder.
- Bulimia or anorexia nervosa.
- Dementia, amnesic, or other cognitive disorder.
- Mental retardation.
- Participants considered a suicide risk.

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01469377

Study Director: | Willie Earley, MD | Allergan |
Responsible Party: | Forest Laboratories |
ClinicalTrials.gov Identifier: | NCT01469377 |
Other Study ID Numbers: |
RGH-MD-75 |
First Posted: | November 10, 2011 Key Record Dates |
Results First Posted: | May 1, 2018 |
Last Update Posted: | May 1, 2018 |
Last Verified: | March 2018 |
Major depressive disorder Depression |
Disease Depressive Disorder Depression Depressive Disorder, Major Pathologic Processes Mood Disorders Mental Disorders |
Behavioral Symptoms Cariprazine Antipsychotic Agents Tranquilizing Agents Central Nervous System Depressants Physiological Effects of Drugs Psychotropic Drugs |