A Study of the Efficacy and Safety of JZP-258 in Subjects With Narcolepsy With Cataplexy
Public ClinicalTrials.gov record NCT03030599. 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 Double-Blind, Placebo-Controlled, Randomized-Withdrawal, Multicenter Study of the Efficacy and Safety of JZP-258 in Subjects With Narcolepsy With Cataplexy
Study identification
- NCT ID
- NCT03030599
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 3
- Lead sponsor
- Jazz Pharmaceuticals
- Industry
- Enrollment
- 201 participants
Conditions and interventions
Conditions
Interventions
- JZP-258 Drug
- Placebo Other
Drug · Other
Eligibility (public fields only)
- Age range
- 18 Years to 70 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
- Mar 13, 2017
- Primary completion
- Jan 23, 2019
- Completion
- Jul 9, 2019
- Last update posted
- Nov 11, 2020
2017 – 2019
United States locations
- U.S. sites
- 12
- U.S. states
- 9
- U.S. cities
- 12
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| SDS Clinical Trials, Inc. | Orange | California | 92858 | — |
| Stanford Health Services | Stanford | California | 94305 | — |
| Colorado Sleep Institute | Boulder | Colorado | 80301 | — |
| Pulmonary Disease Specialists | Kissimmee | Florida | 34741 | — |
| Fort Wayne Neurological Center | Fort Wayne | Indiana | 46804 | — |
| Kentucky Research Group | Louisville | Kentucky | 40218 | — |
| Center for Sleep & Wake Disorders | Chevy Chase | Maryland | 20815 | — |
| Montefiore/ Sleep-Wake Disorders Center | The Bronx | New York | 10467 | — |
| Gastonia Medical Specialty Clinic | Gastonia | North Carolina | 94305 | — |
| Research Carolina | Huntersville | North Carolina | 28078 | — |
| Intrepid Research | Cincinnati | Ohio | 45245 | — |
| Cleveland Clinic, Sleep Disorder Center | Cleveland | Ohio | 44195 | — |
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 13 non-U.S. sites.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT03030599, 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 Nov 11, 2020 · Synced Jul 21, 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 protocol, eligibility criteria, and contact information for NCT03030599 live on ClinicalTrials.gov.