Sleep Disorders, Circadian Rhythm Clinical Trials

6 recruitingLast updated: May 13, 2026

There are 6 actively recruiting sleep disorders, circadian rhythm clinical trials across 6 countries. Studies span Phase 3, Early Phase 1, Not Applicable, Phase 4. Top locations include Aurora, Colorado, United States, Bergen, Vestland, Norway, Berlin, Germany. Updated daily from ClinicalTrials.gov.


Sleep Disorders, Circadian Rhythm Trials at a Glance

6 actively recruiting trials for sleep disorders, circadian rhythm are listed on ClinicalTrialsFinder across 6 cities in 6 countries. The largest study group is Phase 3 with 2 trials, with the heaviest enrollment activity in Aurora, Bergen, and Berlin. Lead sponsors running sleep disorders, circadian rhythm studies include Vanda Pharmaceuticals, Charite University, Berlin, Germany, and Federal State Budgetary Institution, V. A. Almazov Federal North-West Medical Research Centre, of the Ministry of Health.

Browse sleep disorders, circadian rhythm trials by phase

Treatments under study

About Sleep Disorders, Circadian Rhythm Clinical Trials

Looking for clinical trials for Sleep Disorders, Circadian Rhythm? There are currently 6 studies actively recruiting participants. Clinical trials offer access to new treatments before they are widely available, and every approved therapy in use today was first tested through a clinical trial.

Below you can browse trials, sign up for alerts when new Sleep Disorders, Circadian Rhythm trials open, and view eligibility criteria for each study. Each listing includes the study phase, locations, and enrollment details.

Frequently Asked Questions

Common questions about Sleep Disorders, Circadian Rhythm clinical trials

A clinical trial is a carefully designed research study that tests new medical treatments, drugs, devices, or approaches in human volunteers. Every approved medication and treatment available today was proven safe and effective through clinical trials.

All clinical trials are reviewed and approved by Institutional Review Boards (IRBs) — independent committees that evaluate patient safety. Trials follow strict protocols, and your health is monitored closely throughout. You can withdraw at any time.

Not necessarily. Many trials compare the new treatment against the current standard of care, meaning all participants receive active treatment. When placebos are used, they are typically combined with standard treatment, not given alone. The trial description will always specify the design.

Under the Affordable Care Act, most private insurers are required to cover routine patient care costs during a clinical trial. The sponsor typically covers the investigational treatment itself. Medicare also covers routine costs for qualifying trials.

Yes. Participation is completely voluntary. You can withdraw at any time, for any reason, without it affecting your access to standard medical care.

Each trial has specific eligibility criteria — including age, diagnosis, disease stage, prior treatments, and general health. Browse the trials listed above and check their eligibility sections. You can also contact the trial site directly to discuss your situation.

Showing 16 of 6 trials

Recruiting
Early Phase 1

Effect of Melatonin on Sleep Patterns of Resident Trainees During Night Float Shift

Sleep Disorders, Circadian Rhythm
University of Virginia50 enrolled1 locationNCT05701969
Recruiting
Phase 3

Evaluating the Effects of Tasimelteon vs. Placebo in Delayed Sleep-Wake Phase Disorder (DSWPD)

Sleep Wake DisordersSleep Disorders, Circadian RhythmChronobiology Disorders
Vanda Pharmaceuticals70 enrolled17 locationsNCT04652882
Recruiting
Phase 4

The Role of Circadian Factors in Regulation of Neuroplasticity in Ischemic Stroke (Interventional)

Ischemic Stroke, AcuteSleep Disorders, Circadian Rhythm
Federal State Budgetary Institution, V. A. Almazov Federal North-West Medical Research Centre, of the Ministry of Health80 enrolled1 locationNCT05247125
Recruiting
Phase 3

Evaluating the Effects of Tasimelteon Vs. Placebo in Delayed Sleep-Wake Phase Disorder (DSWPD) and the CRY1Δ11 Variant

Sleep Wake DisordersSleep Disorders, Circadian RhythmChronobiology Disorders+1 more
Vanda Pharmaceuticals60 enrolled1 locationNCT06701396
Recruiting
Not Applicable

Effects of Delayed School Start Times on Sleep, Mental Health, and Academic Performance Among Norwegian Adolescents

SleepPsychiatric DisorderSleep Disorders, Circadian Rhythm+1 more
University of Bergen200 enrolled1 locationNCT06657482
Recruiting

Electroencephalography and Sleep Quality With Lormetazepam in the Intensive Care Unit

DeliriumCritical IllnessSleep Disorders, Circadian Rhythm
Charite University, Berlin, Germany50 enrolled1 locationNCT06473415