RecruitingNarcolepsy Type 1Narcolepsy Type 2Idiopathic Hypersomnia
A Long-term Extension Study of ORX750 in Participants With Narcolepsy and Idiopathic Hypersomnia
Eligible age
18–65 yrs
Accepts
All genders
Locations
11 states
Healthy volunteers
No
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About this study
This study is a long-term extension (LTE) of the parent Study ORX750 0201, and will provide long-term open-label safety, tolerability, and efficacy of ORX750 in participants with narcolepsy type 1 (NT1), narcolepsy type 2 (NT2), and idiopathic hypersomnia (IH).
Sponsor: Centessa Pharmaceuticals (UK) Limited
You may qualify if…
- ✓ Diagnosis of narcolepsy (NT1 or NT2) or IH who was eligible for and completed the full treatment period in the eligible parent study ORX750-0201 (CRYSTAL-1)
- ✓ Is willing and able to adhere to additional protocol requirements
You may not qualify if…
- ✕ Development of any new disease/disorder that in the opinion of the investigator would make the participant unable to continue the study
- ✕ Unable to refrain from excluded medications, including those used for treatment of narcolepsy or idiopathic hypersomnia
Where it's recruiting
Alabama
Auburn
California
Santa Ana
Florida
Miami · Orlando · Winter Park
Georgia
Atlanta
Michigan
Sterling Heights
Nevada
Henderson
North Carolina
Denver · Huntersville
Ohio
Cincinnati · Dublin
Pennsylvania
Abington · Willow Grove
South Carolina
North Charleston
Texas
Austin · El Paso
Source: ClinicalTrials.gov · NCT07096674 · last updated 2026-04-16