A Study of ORX750 Capsules Compared to Placebo in Adults with Narcolepsy Type 1, Type 2, and Idiopathic Hypersomnia A Phase 2a Randomized, Double-blind Trial Evaluating Safety, Tolerability, and Effects

What this Trial Is About

Narcolepsy Type 1 (NT1), Narcolepsy Type 2 (NT2), and Idiopathic Hypersomnia (IH) are rare sleep disorders causing excessive daytime sleepiness, making it difficult for people to stay alert during daily activities like school, work, or driving. NT1 often includes sudden muscle weakness called cataplexy triggered by strong emotions, while NT2 does not have cataplexy. People with IH feel tired even after long sleep and may have trouble waking up. This study aims to evaluate the safety, tolerability, and effects of ORX750, a drug designed to mimic orexin, a brain protein that helps keep people awake, in individuals with NT1, NT2, and IH. Participants will be randomly assigned to receive either ORX750 capsules or matching placebo capsules in this Phase 2a trial. The study will compare the drug against placebo to learn about its safety, how the body processes it, and its potential to reduce sleepiness and improve symptoms in these conditions. Participants must stop all other narcolepsy or hypersomnia medications and follow study requirements throughout the trial. During the study, researchers will monitor participants for treatment-related side effects, changes in laboratory tests, vital signs, heart electrical activity (ECG), and any suicidal thoughts or behaviors up to day 35. The main outcomes focus on safety and tolerability of ORX750. The study includes adults aged 18 to 65 years with specific diagnoses of NT1, NT2, or IH and tracks their response and health closely during the trial period.

A Study of ORX750 in Participants With Narcolepsy and Idiopathic Hypersomnia