Medical Information Only. Consult your healthcare provider before considering clinical trial enrollment.
Placebo: early-phase trial registry
4 of 6 indexed Placebo trials are currently recruiting, with more weight in Phase 1-2.
Corpus placement: #2,866 of 28,707 conditions by registered trial count.
6 US clinical trials · 4 currently recruiting · #2,866 of 28,707 conditions by registered trial count
Placebo: 6 US clinical trials tracked, 4 recruiting.
Placebo is the subject of 6 registered US clinical trials on ClinicalTrials.gov, 4 of them currently open to new participants. 0 are in Phase 3-4 (later-stage) and 4 in Phase 1-2 (earlier-stage). The most active sponsor is University of Maryland, Baltimore, running 3 of these trials.
Enrollment posture brief
Registry condition placebo
OPEN 4 | RECR 67% | LATE 0 | EARLY 4 | RANK #2866 | SPON 3
Volume-matched condition peers
Nearest open-share peer: Adenocarcinoma of Lung (67% recruiting · 6 trials)
Placebo lists 4 open slots (67% of 6 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 Placebo 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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Placebo is recruiting above its size-band peers.
4 of 6 indexed trials (66.7%) 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.
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One sponsor concentrates Placebo research.
University of Maryland, Baltimore accounts for 3 of 6 trials (50%). 4 distinct sponsors appear on at least one study for this condition label.
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Typical Placebo enrolment sits around 182 participants.
Median target enrolment is 182 among the 6 trials that report a genuine target (sentinel values excluded). 1 of those (16.7%) plan for fewer than 100 participants.
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Placebo research is mostly interventional.
6 interventional and 0 observational studies make up this index (100% interventional). Study type is sponsor-reported on ClinicalTrials.gov.
Open and recent trials
6 total, page 1 of 1
Understanding How Opioids Affect the Experiential and Neural Signatures of Social Experiences
San Diego State University
NCT05007561
Neural Correlates of Hypoalgesia Driven by Observation
University of Maryland, Baltimore
NCT03897998
Suvorexant as an Adjunct to Buprenorphine in Persons Who Use Fentanyl
Johns Hopkins University
NCT05145764
Neural Mechanisms of Immersive Virtual Reality in Chronic Pain (VR TMD EEG)
University of Maryland, Baltimore
NCT06214923
Neural Mechanisms of Immersive Virtual Reality in Chronic Pain
University of Maryland, Baltimore
NCT04851301
Effects of Expectations on Negative Affect, Perceived Cognitive Effort, and Pain
Trustees of Dartmouth College
NCT05425563
Phase Distribution
| Phase | Trial count |
|---|---|
| Phase 1 | 2 |
| Phase 2 | 2 |
Top Sponsors
Named interventions
Most-linked intervention names on Placebo records (sponsor-reported on ClinicalTrials.gov). Counts are trial links, not unique products.
US sites by state
Facility locations filed on Placebo 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 Placebo page
6 registered trials, 4 currently recruiting, is a starting point for a conversation, not a diagnosis or a recommendation.
- 4 Placebo trials are currently recruiting, check eligibility criteria before contacting a site. Browse recruiting trials
- University of Maryland, Baltimore sponsors the most Placebo trials on record, review their full trial history before evaluating a specific study. See University of Maryland, Baltimore'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 Placebo condition card totals 6 registered trials; most-linked intervention Naloxone; top US site state Maryland. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.