Independent directory Public ClinicalTrials.gov records United States
Clear filters
ClinicalTrials.gov public records Last synced Sep 5, 2026, 11:11 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 1–6 of 6 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Conditions
Narcolepsy With Cataplexy
Interventions
JZP-258, Placebo
Drug · Other
Lead sponsor
Jazz Pharmaceuticals
Industry
Eligibility
18 Years to 70 Years
Enrollment
201 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
12
States / cities
Orange, California • Stanford, California • Boulder, Colorado + 9 more
Conditions
Narcolepsy
Interventions
JZP258
Drug
Lead sponsor
Jazz Pharmaceuticals
Industry
Eligibility
18 Years to 70 Years
Enrollment
155 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
31
States / cities
Culver City, California • Encino, California • Huntington Beach, California + 27 more
Conditions
Idiopathic Hypersomnia
Interventions
JZP-258, Placebo Oral Solution
Drug
Lead sponsor
Jazz Pharmaceuticals
Industry
Eligibility
18 Years to 75 Years
Enrollment
154 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
40
States / cities
Birmingham, Alabama • Mobile, Alabama • Phoenix, Arizona + 35 more
Conditions
Idiopathic Hypersomnia, Narcolepsy
Interventions
JZP258 (XYWAV)
Drug
Lead sponsor
Jazz Pharmaceuticals
Industry
Eligibility
18 Years to 75 Years
Enrollment
199 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
29
States / cities
Birmingham, Alabama • Scottsdale, Arizona • Irvine, California + 25 more
Conditions
Narcolepsy, Idiopathic Hypersomnia
Interventions
Xywav, Placebo
Drug · Other
Lead sponsor
Jazz Pharmaceuticals
Industry
Eligibility
18 Years to 75 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
3
States / cities
Los Angeles, California • Cincinnati, Ohio • Dublin, Ohio
Conditions
Narcolepsy
Interventions
JZP-258
Drug
Lead sponsor
Jazz Pharmaceuticals
Industry
Eligibility
18 Years to 80 Years
Enrollment
62 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
28
States / cities
Alabaster, Alabama • Birmingham, Alabama • Los Angeles, California + 22 more