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NOT YET RECRUITING
NCT07598708
PHASE2/PHASE3

A Study to Investigate the Effects of Cleminorexton Compared With Placebo in the Treatment of Participants With Central Disorders of Hypersomnolence

Sponsor: Centessa Pharmaceuticals (UK) Limited

View on ClinicalTrials.gov

Summary

Narcolepsy Type 1 (NT1) and Narcolepsy Type 2 (NT2) are rare conditions that make people feel very sleepy during the day (often referred to as excessive daytime sleepiness \[EDS\]). People living with these conditions might find it hard to stay alert and pay attention when they are at school, working, driving, or performing other daily activities. While all conditions result in feeling sleepy, there are some differences in other common symptoms: * NT1: People with NT1 often feel very tired during the day and experience cataplexy. Cataplexy is a sudden loss of muscle strength, which can cause someone to collapse or lose control of their muscles for a short time. This is often triggered by strong emotions, such as laughter or surprise. They may also have trouble sleeping well at night. * NT2: People with NT2 feel sleepy during the day, just like NT1, but they do not have cataplexy. Orexin is a protein in the brain that helps coordinate a system that plays an important role in helping people to stay awake during the daytime. Cleminorexton is designed to mimic the action of orexin. The purpose of this study is to see how safe and tolerable cleminorexton is in NT1 and NT2 and learn about what the drug does to the body. Another goal of the study is to see if cleminorexton can help people with NT1 and NT2 feel less sleepy and make other symptoms better.

Official title: A Randomized, Double-blind, 3-Arm Parallel Design Study to Investigate the Efficacy, Safety, Tolerability, and Pharmacokinetics of Cleminorexton Compared With Placebo in Participants With Central Disorders of Hypersomnolence

Key Details

Gender

All

Age Range

18 Years - 70 Years

Study Type

INTERVENTIONAL

Enrollment

222

Start Date

2026-05-15

Completion Date

2027-12-31

Last Updated

2026-05-20

Healthy Volunteers

No

Interventions

DRUG

cleminorexton

Oral cleminorexton capsule

DRUG

Placebo

matching placebo capsule