Sleep clinic study aims to uncover best practices for treating insomnia and body clock disorders
NCT ID NCT06669507
First seen Jul 20, 2026 · Last updated Jul 21, 2026 · Updated 1 time
Summary
This study follows 3,400 adults referred to a sleep clinic for insomnia or circadian rhythm sleep disorders. Participants receive standard care—such as light therapy, melatonin, and blue-light-blocking glasses—and track their progress through questionnaires and sleep diaries. The goal is to understand how these treatments are actually used in practice and how well they work.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Chronotherapy including light therapy, melatonin, and blue-light-blocking glasses
- What this could lead to
- If successful, this study could help standardize and improve sleep disorder treatments in clinical practice.
- What could go wrong
- This is an observational study without a control group, so results may not prove cause and effect. Individual responses to treatment can vary widely.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 3,400 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jan 2025
- Expected to finish
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Dec 2030
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Referred to the Sleep Clinic at St. Olavs Hospital for an assessment of a sleep-wake disruption. * Age \>= 18 years. * Willing and able to provide written informed consent. * Meeting the diagnostic criteria for at least one of the following disorders: F51.0 Insomnia disorder or G47.2 Sleep-wake rhythm disorders, considered being either: Delayed sleep-wake phase disorder, Advanced sleep-wake phase disorder, Non-24-hour sleep-wake disorder or Irregular sleep-wake disorder * Desire non-pharmacological sleep treatment Exclusion Criteria: * Individuals working night shifts or that otherwise have external conditions that result in inadequate sleep opportunity, such as caring for an infant or does not have permanent housing etc. * Individuals being blind * Individuals being psychotic * Individuals having epilepsy * Individuals having an ongoing substance abuse
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Sleep Clinic, St Olavs Hospital
RECRUITINGTrondheim, 7012, Norway
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