Phase 2 Long-term Extension Study of Oral ORX750 for Safety and Effectiveness in Adults With Narcolepsy Type 1, Type 2, and Idiopathic Hypersomnia Who Completed a Prior ORX750 Trial

What this Trial Is About

Researchers are conducting a long-term extension study to evaluate the safety, tolerability, and effectiveness of ORX750 in adults aged 18 to 65 years who have narcolepsy type 1, narcolepsy type 2, or idiopathic hypersomnia. This study follows participants who completed a previous ORX750 clinical trial and focuses on providing ongoing information about the treatment over an extended period. Participants will receive oral ORX750 in an open-label format, grouped by their specific diagnosis narcolepsy type 1, narcolepsy type 2, or idiopathic hypersomnia. The study does not involve randomization or blinding, allowing all participants to know they are receiving the study drug. The treatment and monitoring periods include assessments up to about 70 days for safety and roughly 63 days for measures of drug concentration and wakefulness. During the study, participants will undergo frequent evaluations including monitoring for adverse events, laboratory tests, vital signs, ECGs, and assessments for suicidal thoughts or behaviors. They will also complete tests measuring wakefulness and sleepiness levels. This ongoing observation aims to ensure the treatments safety and to understand its effects over time, with participant involvement lasting through the entire study period.

A Long-term Extension Study of ORX750 in Participants With Narcolepsy and Idiopathic Hypersomnia