Sleep clinic study aims to uncover best practices for treating insomnia and body clock disorders

NCT ID NCT06669507

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

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

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

About 3,400 people

The number the study aims to enrol. It can still change while the study runs.

Started

Jan 2025

Expected to finish

Dec 2030

An estimate. End dates often move.

Lead sponsor

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

18 years and older

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show 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

Get updates

Get notified about this study

Sign up to get updates when this study changes or when new studies for Advanced sleep-wake phase disorder are added.

Our safety recommendation!

By submitting, you agree to our Terms of use

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.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. 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

  • Sleep Clinic, St Olavs Hospital

    RECRUITING

    Trondheim, 7012, Norway

More trials for these conditions

Other studies related to the condition(s) this trial covers.