A Phase 2a, Randomized, Double-blind, Placebo-controlled Study of the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of ORX750 in Subjects With Narcolepsy and Idiopathic Hypersomnia

What this Trial Is About

Researchers are evaluating the safety, tolerability, and effects of ORX750 in adults with Narcolepsy Type 1 NT1, Narcolepsy Type 2 NT2, and Idiopathic Hypersomnia IH. These rare conditions cause excessive daytime sleepiness and affect daily activities such as school, work, and driving. The study aims to understand how ORX750, which mimics the brain protein orexin that helps maintain wakefulness, impacts sleepiness and other symptoms in these conditions. Participants will receive either ORX750 capsules or matching placebo capsules in a randomized, double-blind setup. The study assesses multiple groups those with NT1, NT2, and IH. The treatment and monitoring will occur over a period of up to 35 days, including evaluation of plasma drug levels and sleepiness measures. During the study, participants will undergo safety assessments including monitoring for adverse events, laboratory tests, vital signs, ECGs, and suicidal ideation screening up to day 35. Researchers will also measure sleepiness using the Maintenance of Wakefulness Test and the Epworth Sleepiness Scale. The total study duration for each participant is about five weeks, with careful observation of how the body processes ORX750 and its effects on daytime alertness.

A Study of ORX750 in Participants With Narcolepsy and Idiopathic Hypersomnia