A Study of ALKS 3831 in Adults With Schizophrenia
Public ClinicalTrials.gov record NCT01903837. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
A Phase 2, Randomized, Multicenter, Safety, Tolerability, and Dose-Ranging Study of Samidorphan, a Component of ALKS 3831, in Adults With Schizophrenia Treated With Olanzapine
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
This is a Phase 2, randomized, placebo-controlled multicenter study, which will be conducted in 2 parts. The study duration for each subject will be approximately 33 weeks and will include 25 study visits.
Study identification
- NCT ID
- NCT01903837
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 2
- Enrollment
- 347 participants
Conditions and interventions
Conditions
Interventions
- Samidorphan (Low Dose) Drug
- Samidorphan (Medium Dose) Drug
- Samidorphan (High Dose) Drug
- Placebo Drug
- Olanzapine Drug
Drug
Eligibility (public fields only)
- Age range
- 18 Years to 50 Years
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Jun 2013 (Type not available)
- Primary completion
- Dec 2014 (Actual)
- Completion
- Mar 2015 (Actual)
- Last update posted
- Oct 6, 2021
2013 – 2015
United States locations
- U.S. sites
- 50
- U.S. states
- 20
- U.S. cities
- 46
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Alkermes Investigational Site | Little Rock | Arkansas | 72211 | — |
| Alkermes Investigational Site | Anaheim | California | 92805 | — |
| Alkermes Investigational Site | Costa Mesa | California | 92626 | — |
| Alkermes Investigational Site | Culver City | California | 90230 | — |
| Alkermes Investigational Site | Escondido | California | 92025 | — |
| Alkermes Investigational Site | Garden Grove | California | 92845 | — |
| Alkermes Investigational Site | National City | California | 91950 | — |
| Alkermes Investigational Site | Oakland | California | 94612 | — |
| Alkermes Investigational Site | Oceanside | California | 92056 | — |
| Alkermes Investigational Site | Orange | California | 92868 | — |
| Alkermes Investigational Site | Pico Rivera | California | 90660 | — |
| Alkermes Investigational Site | San Diego | California | 92103 | — |
| Alkermes Investigational Site | Torrance | California | 90502 | — |
| Alkermes Investigational Site | New Britain | Connecticut | 06052 | — |
| Alkermes Investigational Site | Washington D.C. | District of Columbia | 20016 | — |
| Alkermes Investigational Site | Bradenton | Florida | 34208 | — |
| Alkermes Investigational Site | Fort Lauderdale | Florida | 33308 | — |
| Alkermes Investigational Site | Gainesville | Florida | 32607 | — |
| Alkermes Investigational Site | Kissimmee | Florida | 34741 | — |
| Alkermes Investigational Site | Leesburg | Florida | 34748 | — |
| Alkermes Investigational Site | Oakland Park | Florida | 33334 | — |
| Alkermes Investigational Site | Orlando | Florida | 32810 | — |
| Alkermes Investigational Site | Atlanta | Georgia | 30308 | — |
| Alkermes Investigational Site | Decatur | Georgia | 30030 | — |
| Alkermes Investigational Site | Chicago | Illinois | 60640 | — |
| Alkermes Investigational Site | Lake Charles | Louisiana | 70629 | — |
| Alkermes Investigational Site | Shreveport | Louisiana | 71101 | — |
| Alkermes Investigational Site | Rockville | Maryland | 20850 | — |
| Alkermes Investigational Site | Flowood | Mississippi | 39232 | — |
| Alkermes Investigational Site | Creve Coeur | Missouri | 63141 | — |
| Alkermes Investigational Site | St Louis | Missouri | 63118 | — |
| Alkermes Investigational Site | Marlton | New Jersey | 08053 | — |
| Alkermes Investigational Site | Neptune City | New Jersey | 07754 | — |
| Alkermes Investigational Site | Canton | Ohio | 44718 | — |
| Alkermes Investigational Site | Mason | Ohio | 45040 | — |
| Alkermes Investigational Site | Oklahoma City | Oklahoma | 73103 | — |
| Alkermes Investigational Site | Oklahoma City | Oklahoma | 73116 | — |
| Alkermes Investigational Site | Philadelphia | Pennsylvania | 19139 | — |
| Alkermes Investigational Site | Charleston | South Carolina | 29407 | — |
| Alkermes Investigational Site | Memphis | Tennessee | 38119 | — |
| Alkermes Investigational Site | Austin | Texas | 78731 | — |
| Alkermes Investigational Site | Austin | Texas | 78754 | — |
| Alkermes Investigational Site | Dallas | Texas | 75231 | — |
| Alkermes Investigational Site | Dallas | Texas | 75243 | — |
| Alkermes Investigational Site | DeSoto | Texas | 75115 | — |
| Alkermes Investigational Site | Houston | Texas | 77007 | — |
| Alkermes Investigational Site | Houston | Texas | 77008 | — |
| Alkermes Investigational Site | Salt Lake City | Utah | 84106 | — |
| Alkermes Investigational Site | Bellevue | Washington | 98007 | — |
| Alkermes Investigational Site | Richland | Washington | 99362 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
Non-U.S. locations
This page focuses on the U.S. directory. The official record also lists 11 non-U.S. sites.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT01903837, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Oct 6, 2021 · Synced Oct 19, 2026
Related: full search, browse by condition, browse by drug or therapy, browse by sponsor, browse by U.S. city.
Open the official record
The complete public registry record, listed eligibility criteria, and available contact information for NCT01903837 live on ClinicalTrials.gov.