Zelquistinel in the Treatment of Adults With Major Depressive Disorder
Public ClinicalTrials.gov record NCT03726658. 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 Two-Part, Double-Blind, Placebo-Controlled, Single- and Multiple-Dose (Part A) or Twice Daily Dose (Part B) Study of AGN-241751 in Adult Participants With Major Depressive Disorder
Study identification
- NCT ID
- NCT03726658
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 1, Phase 2
- Lead sponsor
- Syndeio Biosciences, Inc
- Industry
- Enrollment
- 226 participants
Conditions and interventions
Conditions
Interventions
- AGN-241751 Drug
- Placebo Drug
Drug
Eligibility (public fields only)
- Age range
- 18 Years to 65 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
- Nov 7, 2018
- Primary completion
- Oct 22, 2019
- Completion
- Oct 22, 2019
- Last update posted
- Apr 6, 2026
2018 – 2019
United States locations
- U.S. sites
- 5
- U.S. states
- 5
- U.S. cities
- 5
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Alea Research | Phoenix | Arizona | 85012 | — |
| Collaborative Neuroscience Network, LLC | Garden Grove | California | 92845 | — |
| Atlanta Center for Medical Research | Atlanta | Georgia | 30331 | — |
| Hassman Research Institute | Berlin | New Jersey | 08809 | — |
| Northwest Clinical Research Center | Bellevue | Washington | 98007 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT03726658, 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 Apr 6, 2026 · Synced May 7, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT03726658 live on ClinicalTrials.gov.