Narcolepsy without cataplexy

This study looks at the long-term safety and tolerability of the drug TAK-360 in people with narcolepsy (type 1 or 2) or idiopathic hypersomnia — conditions that cause severe daytime sleepiness. Participants who completed a previous TAK-360 study can join and will continue taking…

This study tests whether HBS-301 (pitolisant) can reduce excessive daytime sleepiness and cataplexy (sudden muscle weakness) in adults with narcolepsy. Participants receive either the drug or a placebo for several weeks, followed by an open-label phase where everyone gets the dru…

This study is a long-term follow-up for people with narcolepsy or idiopathic hypersomnia who previously took the experimental drug ORX750. Researchers want to see if the drug remains safe and effective over time. About 90 participants will take ORX750 orally and be monitored for …

This study tests an experimental drug called cleminorexton in 222 adults with narcolepsy type 1 or 2. The drug mimics a natural brain protein that helps keep people awake. The goal is to see if it safely reduces daytime sleepiness and improves daily functioning. Participants must…

This study tests a drug called samelisant in 240 people with narcolepsy (with or without cataplexy). The goal is to see if it reduces excessive daytime sleepiness and sudden muscle weakness episodes over 12 weeks. Participants will take the drug or a placebo and report their slee…

This study tests a new tablet called ALKS 2680 to see if it can reduce daytime sleepiness in adults with narcolepsy type 2. About 176 participants will receive either the study drug or a placebo for 12 weeks. The main goal is to measure how well they can stay awake using a standa…

This study tests a new drug called TAK-360 for people with narcolepsy type 2, a condition that causes severe daytime sleepiness. The drug acts like a natural brain chemical (orexin) that helps keep people awake. About 88 adults will receive either TAK-360 or a placebo to see if t…

This Phase 3 study tests whether expanded dosing regimens of Xywav can safely reduce excessive daytime sleepiness in adults with narcolepsy or idiopathic hypersomnia. About 108 participants will receive either Xywav or a placebo in a randomized withdrawal design. The main goal is…

This study is testing the long-term safety and how well ALKS 2680 works over time in people with narcolepsy type 1, type 2, or idiopathic hypersomnia. Participants take a once-daily tablet at different doses. The goal is to see if the drug remains safe and effective for staying a…

This study tests a non-medication therapy called Imagery Rehearsal Therapy to see if it can reduce nightmares in adults with narcolepsy. About 80 participants will receive the therapy and complete three assessments, with half starting right away and half later. The goal is to imp…

This study tests whether E2086, an oral tablet, can reduce excessive daytime sleepiness in adults with narcolepsy. About 64 participants will receive either the drug or a placebo for 4 weeks. Researchers will measure how long people can stay awake using a standard test, and also …

This study tests a new drug called ORX750 (cleminorexton) in 248 adults with narcolepsy type 1, type 2, or idiopathic hypersomnia—conditions that cause severe daytime sleepiness. The drug mimics a natural brain protein that helps keep people awake. The main goals are to check saf…

This study looks at how narcolepsy (types 1 and 2) and idiopathic hypersomnia affect social cognition—skills like recognizing emotions and making decisions. Researchers will give 75 adults several questionnaires to measure attention, impulse control, empathy, and emotion recognit…