Medical Information Only. Consult your healthcare provider before considering clinical trial enrollment.
Circadian Rhythms clinical trials
3 of 3 indexed Circadian Rhythms trials are currently recruiting.
Corpus placement: #5,209 of 28,707 conditions by registered trial count.
3 US clinical trials · 3 currently recruiting · #5,209 of 28,707 conditions by registered trial count
Circadian Rhythms: 3 US clinical trials tracked, 3 recruiting.
Circadian Rhythms is the subject of 3 registered US clinical trials on ClinicalTrials.gov, 3 of them currently open to new participants. The most active sponsor is University of Colorado, Boulder, running 1 of these trials.
Enrollment posture brief
Registry condition circadian-rhythms
OPEN 3 | RECR 100% | LATE 0 | EARLY 0 | RANK #5209 | SPON 1
Volume-matched condition peers
Nearest open-share peer: Aortic Arch Aneurysm (100% recruiting · 5 trials)
Circadian Rhythms lists 3 open slots (100% of 3 indexed trials). Peers are matched on registered volume, not therapeutic-area browse lists. How peer matching works →
Key findings
What ClinicalTrials.gov does not surface for Circadian Rhythms on its own pages , computed from the registry mirror as of 2026-08-08. Each line carries its own denominator so it can be quoted as it stands.
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Circadian Rhythms is recruiting above its size-band peers.
3 of 3 indexed trials (100%) are open to enrollment, against a 46.5% average across 27,806 conditions with fewer than 20 trials. The peer set uses the same ClinicalTrials.gov-derived counts as this page.
Open and recent trials
3 total, page 1 of 1
The Effect of Light Intervention on Recovery in Individuals With Opioid Use Disorder (OUD)
University of Alabama at Birmingham
NCT06832007
Sleep and Circadian Mechanisms in Hypertension
Oregon Health and Science University
NCT05184933
Biomarkers for Peripheral Circadian Clocks in Humans
University of Colorado, Boulder
NCT06296823
Phase Distribution
Phase data not available
Top Sponsors
Named interventions
Most-linked intervention names on Circadian Rhythms records (sponsor-reported on ClinicalTrials.gov). Counts are trial links, not unique products.
US sites by state
Facility locations filed on Circadian Rhythms trials. A trial with sites in several states counts in each.
Source: ClinicalTrials.gov, National Library of Medicine. Data is informational only.
Related
What to do with this Circadian Rhythms page
3 registered trials, 3 currently recruiting, is a starting point for a conversation, not a diagnosis or a recommendation.
- 3 Circadian Rhythms trials are currently recruiting, check eligibility criteria before contacting a site. Browse recruiting trials
- University of Colorado, Boulder sponsors the most Circadian Rhythms trials on record, review their full trial history before evaluating a specific study. See University of Colorado, Boulder's trials
- Bring the specific trial ID (NCT number) to your own doctor before enrolling, this page is a directory, not medical guidance. Read the trial-finding guide
Trial and recruiting counts reflect ClinicalTrials.gov registry status as of the data vintage above; individual trial eligibility and enrollment status can change.
Every figure on PlainTrial is rendered directly from the ClinicalTrials.gov registry, no number is typed in by an editor. This Circadian Rhythms condition card totals 3 registered trials; most-linked intervention Overnight Sleep Trial; top US site state Oregon. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.