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ClinicalTrials.gov 9 recruiting now small index

Circadian Rhythm clinical trials

9 of 10 indexed Circadian Rhythm trials are currently recruiting.

Corpus placement: #1,724 of 28,707 conditions by registered trial count.

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10 US clinical trials · 9 currently recruiting · #1,724 of 28,707 conditions by registered trial count

Circadian Rhythm: 10 US clinical trials tracked, 9 recruiting.

Circadian Rhythm is the subject of 10 registered US clinical trials on ClinicalTrials.gov, 9 of them currently open to new participants. The most active sponsor is Oregon Health and Science University, running 3 of these trials.

Enrollment posture brief

Registry condition circadian-rhythm

OPEN 9 | RECR 90% | LATE 0 | EARLY 0 | RANK #1724 | SPON 3

Volume-matched condition peers

Nearest open-share peer: COPD (Chronic Obstructive Pulmonary Disease) (90% recruiting · 10 trials)

Circadian Rhythm (this)90%Acute Leukemia of Ambiguous 80%Achondroplasia40%Accelerated Phase Chronic My20%Accidental Fall20%
Open-enrollment share among volume-matched conditions near Circadian Rhythm

Circadian Rhythm lists 9 open slots (90% of 10 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 Rhythm 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.

  1. Circadian Rhythm is recruiting above its size-band peers.

    9 of 10 indexed trials (90%) 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.

  2. One sponsor concentrates Circadian Rhythm research.

    Oregon Health and Science University accounts for 3 of 10 trials (30%). 8 distinct sponsors appear on at least one study for this condition label.

  3. Typical Circadian Rhythm enrolment sits around 113 participants.

    Median target enrolment is 113 among the 10 trials that report a genuine target (sentinel values excluded). 5 of those (50%) plan for fewer than 100 participants.

  4. Circadian Rhythm research is mostly interventional.

    9 interventional and 1 observational studies make up this index (90% interventional). Study type is sponsor-reported on ClinicalTrials.gov.

Phase Distribution

Phase data not available

Top Sponsors

Oregon Health and Science University 3 trials
Freda Patterson 1 trials
The University of Tennessee, Knoxville 1 trials
University of Utah 1 trials
Brigham and Women's Hospital 1 trials
Rush University Medical Center 1 trials
University of Pittsburgh 1 trials
Baylor College of Medicine 1 trials

Named interventions

Most-linked intervention names on Circadian Rhythm records (sponsor-reported on ClinicalTrials.gov). Counts are trial links, not unique products.

Cannabis Discontinuation Behavioral
1 trials
Peripheral Misalignment Behavioral
1 trials
Central Clock Misalignment Behavioral
1 trials
Gradually Shifted Sleep Behavioral
1 trials
Baseline Sleep Satiation and Phase Stabilization Behavioral
1 trials
Moderate intensity walking or stepping Behavioral
1 trials
Calming Content Behavioral
1 trials
Exciting content Behavioral
1 trials

US sites by state

Facility locations filed on Circadian Rhythm trials. A trial with sites in several states counts in each.

Oregon 3 trials
Utah 1 trials
Texas 1 trials
Tennessee 1 trials
Pennsylvania 1 trials
Massachusetts 1 trials
Illinois 1 trials
Delaware 1 trials

Source: ClinicalTrials.gov, National Library of Medicine. Data is informational only.

Related

Read our methodology - how this data is sourced, computed, and verified.

What to do with this Circadian Rhythm page

10 registered trials, 9 currently recruiting, is a starting point for a conversation, not a diagnosis or a recommendation.

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 Rhythm condition card totals 10 registered trials; most-linked intervention Cannabis Discontinuation; top US site state Oregon. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.