Medical Information Only. Consult your healthcare provider before considering clinical trial enrollment.
Healthy Subjects: early-phase trial registry
14 of 70 indexed Healthy Subjects trials are currently recruiting, with more weight in Phase 1-2.
Corpus placement: #198 of 28,707 conditions by registered trial count.
70 US clinical trials · 14 currently recruiting · #198 of 28,707 conditions by registered trial count
Healthy Subjects: 70 US clinical trials tracked, 14 recruiting.
Healthy Subjects is the subject of 70 registered US clinical trials on ClinicalTrials.gov, 14 of them currently open to new participants. 1 are in Phase 3-4 (later-stage) and 50 in Phase 1-2 (earlier-stage). The most active sponsor is GlaxoSmithKline, running 7 of these trials.
Enrollment posture brief
Registry condition healthy-subjects
OPEN 14 | RECR 20% | LATE 1 | EARLY 50 | RANK #198 | SPON 7
Volume-matched condition peers
Nearest open-share peer: Accelerated Phase Chronic Myelogenous Leukemia, BCR-ABL1 Positive (20% recruiting · 10 trials)
Healthy Subjects lists 14 open slots (20% of 70 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 Healthy Subjects 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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Healthy Subjects is recruiting below its size-band peers.
14 of 70 indexed trials (20%) are open to enrollment, against a 39.7% average across 762 conditions with 20-99 trials. The peer set uses the same ClinicalTrials.gov-derived counts as this page.
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Sponsorship of Healthy Subjects trials is spread across many organizations.
GlaxoSmithKline accounts for 7 of 70 trials (10%). 48 distinct sponsors appear on at least one study for this condition label.
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Most Healthy Subjects trials plan to enrol fewer than 100 people.
Median target enrolment is 32 among the 70 trials that report a genuine target (sentinel values excluded). 58 of those (82.9%) plan for fewer than 100 participants.
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Healthy Subjects research is mostly interventional.
65 interventional and 5 observational studies make up this index (92.9% interventional). Study type is sponsor-reported on ClinicalTrials.gov.
Open and recent trials
70 total, page 2 of 2
A Single Oral Dose Study to Compare the Bioavailability Between Two Different Tablet Formulations and Assess if There is a Food Effect With the New Formulation
Astellas Pharma
NCT01484964
A Study to Evaluate the Effect of Verapamil on the Pharmacokinetics of ASP015K in Healthy Adult Subjects
Astellas Pharma Global Development
NCT02111317
A Study to Evaluate the Effect of Multiple Doses of Isavuconazole on the Pharmacokinetics of Repaglinide and Caffeine
Astellas Pharma Global Development
NCT02128321
A Study to Evaluate the Effect of Multiple Doses of Esomeprazole on the Pharmacokinetics of Isavuconazole
Astellas Pharma Global Development
NCT02128893
Multiple Dose Study Evaluating the Safety and Tolerability of NSA-789
Wyeth is now a wholly owned subsidiary of Pfizer
NCT00795730
Effect of a Commercial Cosmetic Mouth Rinse on Plaque Re-growth
GlaxoSmithKline
NCT01122862
Effects of Systemically Administered Hydrocortisone on the Immune System in Healthy Volunteers
National Heart, Lung, and Blood Institute (NHLBI)
NCT01281995
A Drug-Drug Interaction Study to Evaluate the Effect of Rifampin on the Pharmacokinetics of Apremilast
Amgen
NCT01561963
GSK1349572 First Time in Human Study
GlaxoSmithKline
NCT00555035
Drug-Interaction Study to Evaluate the Effect of Rifampin, a Potent CYP3A4 Inducer, on the Systemic Exposure of Pacritinib in Healthy Subjects
CTI BioPharma
NCT02807116
Relative Bioavailability Study of Two New Dolutegravir/Abacavir/Lamivudine Fixed Dose Combination Tablets
ViiV Healthcare
NCT01366547
Effect of Oral Adenosine-triphosphate (ATP) on Human Muscle Performance
Metabolic Technologies
NCT01141504
Evaluate Retention of an Orally Administered Device Using Gamma Scintigraphy
Procter and Gamble
NCT00754091
A Study to Examine the Absorption of GSK561679 in Healthy Male Volunteers
GlaxoSmithKline
NCT00539136
DDI Study of Etravirine and GSK1265744
GlaxoSmithKline
NCT00920296
A Single Dose Crossover Study In Healthy Subjects To Evaluate Different Formulations Of PF-06882961
Pfizer
NCT03492697
Study to Evaluate the Pharmacokinetics of 14C-labeled Isavuconazole Following a Single Oral Dose of 14C-labeled Prodrug Isavuconazonium Sulfate (BAL8557) in Healthy Male Subjects
Astellas Pharma Global Development
NCT01813461
An Open-Label, Single-Dose Study to Determine the Metabolism and Elimination of 14C-Perampanel in Healthy Male Subjects
Eisai
NCT02116907
Pharmacokinetics and Bioavailability of Single Subcutaneous Doses of Methylnaltrexone Versus Intravenous Dose
Bausch Health Americas
NCT01367496
(+)-Alpha-Dihydrotetrabenazine Phase I
Kirk A. Frey
NCT02844179
Phase Distribution
| Phase | Trial count |
|---|---|
| Phase 1 | 47 |
| Phase 2 | 3 |
| Phase 3 | 1 |
Top Sponsors
Named interventions
Most-linked intervention names on Healthy Subjects records (sponsor-reported on ClinicalTrials.gov). Counts are trial links, not unique products.
US sites by state
Facility locations filed on Healthy Subjects 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 Healthy Subjects page
70 registered trials, 14 currently recruiting, is a starting point for a conversation, not a diagnosis or a recommendation.
- 14 Healthy Subjects trials are currently recruiting, check eligibility criteria before contacting a site. Browse recruiting trials
- GlaxoSmithKline sponsors the most Healthy Subjects trials on record, review their full trial history before evaluating a specific study. See GlaxoSmithKline'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 Healthy Subjects condition card totals 70 registered trials; most-linked intervention Placebo; top US site state Maryland. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.