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ClinicalTrials.gov 6 recruiting now early-phase tilt small index

REM Sleep Behavior Disorder: early-phase trial registry

6 of 12 indexed REM Sleep Behavior Disorder trials are currently recruiting, with more weight in Phase 1-2.

Corpus placement: #1,429 of 28,707 conditions by registered trial count.

12 US clinical trials · 6 currently recruiting · #1,429 of 28,707 conditions by registered trial count

REM Sleep Behavior Disorder: 12 US clinical trials tracked, 6 recruiting.

REM Sleep Behavior Disorder is the subject of 12 registered US clinical trials on ClinicalTrials.gov, 6 of them currently open to new participants. 1 are in Phase 3-4 (later-stage) and 5 in Phase 1-2 (earlier-stage). The most active sponsor is Cedars-Sinai Medical Center, running 3 of these trials.

Enrollment posture brief

Registry condition rem-sleep-behavior-disorder

OPEN 6 | RECR 50% | LATE 1 | EARLY 5 | RANK #1429 | SPON 3

Nearest open-share peer: Abdominal Aortic Aneurysms (50% recruiting · 6 trials)

REM Sleep Behavior Disor (th…50%Acute Myeloid Leukemia in Re41.7%Adenocarcinoma of the Rectum41.7%Adherence, Patient16.7%Accelerated Phase Chronic My0%
Open-enrollment share among volume-matched conditions near REM Sleep Behavior Disorder

REM Sleep Behavior Disorder lists 6 open slots (50% of 12 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 REM Sleep Behavior Disorder 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. REM Sleep Behavior Disorder is recruiting above its size-band peers.

    6 of 12 indexed trials (50%) 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 REM Sleep Behavior Disorder research.

    Cedars-Sinai Medical Center accounts for 3 of 12 trials (25%). 9 distinct sponsors appear on at least one study for this condition label.

  3. Most REM Sleep Behavior Disorder trials plan to enrol fewer than 100 people.

    Median target enrolment is 60 among the 12 trials that report a genuine target (sentinel values excluded). 9 of those (75%) plan for fewer than 100 participants.

  4. REM Sleep Behavior Disorder research is mostly interventional.

    9 interventional and 3 observational studies make up this index (75% interventional). Study type is sponsor-reported on ClinicalTrials.gov.

Phase 11Phase 24Phase 41

Open and recent trials

12 total, page 1 of 1

RECRUITING 800 participants

Natural History Study of Synucleinopathies

NYU Langone Health

NCT01799915

RECRUITING 500 participants

North American Prodromal Synucleinopathy Consortium Stage 2

Washington University School of Medicine

NCT05826457

RECRUITING 100 participants

Intestinal Immunity in Neurologic Disease

Yale University

NCT06329453

RECRUITING NA 86 participants

Neuroplasticity in RBD

University of Minnesota

NCT05471960

RECRUITING NA 60 participants

Identification of Prodromal Neurodegeneration in Serotonergic-Induced REM Sleep Behavior Disorder

University of Minnesota

NCT06467461

RECRUITING NA 20 participants

Behavioral Treatment for Nightmares in REM Sleep Behavior Disorder

University of Utah

NCT06441864

ACTIVE NOT RECRUITING Phase 2 15 participants

Cardiac Changes in Early Parkinson's Disease: A Follow up Study

Cedars-Sinai Medical Center

NCT04218968

ACTIVE NOT RECRUITING Phase 2 15 participants

Terazosin Effect on Cardiac Changes in Early Parkinson's Disease

Cedars-Sinai Medical Center

NCT04386317

ACTIVE NOT RECRUITING Phase 2 15 participants

Terazosin and Parkinson's Disease Extension Study

Cedars-Sinai Medical Center

NCT05109364

ACTIVE NOT RECRUITING Phase 2 15 participants

Adrenergic Blockers for Cardiac Changes in Early Parkinson's Disease (Protocol 53136)

Michele Tagliati, MD

NCT03775096

COMPLETED Phase 1 82 participants

Quantitative Mapping of Substantia Nigra Iron in Parkinson's Disease (Stages I-IV, REM Sleep Behavior Disorder) and Controls

Weill Medical College of Cornell University

NCT03675282

COMPLETED Phase 4 24 participants

Treatment of REM Sleep Behavior Disorder (RBD) With Sodium Oxybate

Stanford University

NCT04006925

Phase Distribution

PhaseTrial count
Phase 1 1
Phase 2 4
Phase 4 1

Named interventions

Most-linked intervention names on REM Sleep Behavior Disorder records (sponsor-reported on ClinicalTrials.gov). Counts are trial links, not unique products.

Carvedilol Drug
2 trials
Ioflupane Drug
1 trials
(11C)PE2I Drug
1 trials
Sodium Oxybate Drug
1 trials
Terazosin therapy Drug
1 trials
Terazosin Drug
1 trials
Colon Tissue Biopsy Procedure
1 trials
Cognitive Behavioral Therapy for Nightmares Behavioral
1 trials

US sites by state

Facility locations filed on REM Sleep Behavior Disorder trials. A trial with sites in several states counts in each.

California 6 trials
Minnesota 4 trials
New York 2 trials
Massachusetts 2 trials
Utah 1 trials
Tennessee 1 trials
Oregon 1 trials
Missouri 1 trials

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

What to do with this REM Sleep Behavior Disorder page

12 registered trials, 6 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 REM Sleep Behavior Disorder condition card totals 12 registered trials; most-linked intervention Carvedilol; top US site state California. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.