Clinical trial Recruiting at 1 site Interventional Ages 6 and up

Cohort for chronic sleep disorders causing excessive daytime sleepiness

Official title: Constitution of a Clinical, Neurophysiological and Biological Cohort for Chronic Sleep Disorders Responsible of Hypersomnolence

Run by University Hospital, Montpellier · NCT03998020 · Data updated 2026-11-12

This study is trying to learn more about the causes of excessive daytime sleepiness in people with chronic sleep disorders to help improve their treatment.

Quick facts

Study typeInterventional
Ages6 Years and up
SexAll
Enrollment5000 (estimated)
SponsorUniversity Hospital, Montpellier
Academic / other
Locations1 site (Montpellier)
StatusRecruiting
StartedJune 16, 2020
Main results expectedJune 16, 2030
Study endsJune 16, 2033
Registry record updatedJanuary 2, 2024
Trial IDNCT03998020 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are individuals experiencing chronic hypersomnolence, identified by a sleep specialist, who may or may not have a diagnosed chronic sleep disorder.

Probably not a fit

Patients who are incarcerated, living in medical institutions, or do not have a social security system may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study aims to create a comprehensive clinical, neurophysiological, and biological cohort for individuals suffering from chronic sleep disorders that lead to excessive daytime sleepiness. It focuses on understanding the various pathophysiological mechanisms behind hypersomnolence, which can be secondary to conditions like restless leg syndrome, parasomnias, or Attention-Deficit/Hyperactivity Disorder. Participants will undergo assessments including severity scales and blood samples to gather data that may help elucidate the underlying causes of their symptoms. The goal is to improve the understanding and treatment of these debilitating conditions.

Why it matters

Potential benefit: If successful, this study could lead to better diagnosis and treatment options for patients suffering from chronic sleep disorders and hypersomnolence.

How similar studies have gone: While there have been studies on chronic sleep disorders, this cohort approach focusing on multiple pathophysiological mechanisms is relatively novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Have a complaint of chronic hypersomnolence on questioning, identified by a sleep specialist and requiring objective explorations in the Centre de Hypersomnias Rares, with or without a diagnosis of chronic sleep disorder according to the International Classification scale in force at the time of diagnosis
* can be treated or not for chronic sleep disorder.
* speak and understand french
* should have a social security system
* should not have infectious or inflammatory pathology

Exclusion Criteria:

* be private of liberty
* live in medical institution
* be a major protected by law
* not have social security system
* refuse to participate in protocol

Where it's running

  • UH Montpellier
    Montpellier, France
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.