Medical Information Only. Consult your healthcare provider before considering clinical trial enrollment.
Microbiome: early-phase trial registry
4 of 13 indexed Microbiome trials are currently recruiting, with more weight in Phase 1-2.
Corpus placement: #1,315 of 28,707 conditions by registered trial count.
13 US clinical trials · 4 currently recruiting · #1,315 of 28,707 conditions by registered trial count
Microbiome: 13 US clinical trials tracked, 4 recruiting.
Microbiome is the subject of 13 registered US clinical trials on ClinicalTrials.gov, 4 of them currently open to new participants. 0 are in Phase 3-4 (later-stage) and 2 in Phase 1-2 (earlier-stage). The most active sponsor is Stanford University, running 3 of these trials.
Enrollment posture brief
Registry condition microbiome
OPEN 4 | RECR 31% | LATE 0 | EARLY 2 | RANK #1315 | SPON 3
Volume-matched condition peers
Nearest open-share peer: Acute Decompensated Heart Failure (31% recruiting · 13 trials)
Microbiome lists 4 open slots (31% of 13 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 Microbiome 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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Microbiome is recruiting below its size-band peers.
4 of 13 indexed trials (30.8%) 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 Microbiome research.
Stanford University accounts for 3 of 13 trials (23.1%). 9 distinct sponsors appear on at least one study for this condition label.
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Typical Microbiome enrolment sits around 90 participants.
Median target enrolment is 90 among the 13 trials that report a genuine target (sentinel values excluded). 7 of those (53.8%) plan for fewer than 100 participants.
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Microbiome research is mostly interventional.
11 interventional and 2 observational studies make up this index (84.6% interventional). Study type is sponsor-reported on ClinicalTrials.gov.
Open and recent trials
13 total, page 1 of 1
The Role of Brain-Bone Marrow-Gut Interaction Following Major Trauma
University of Florida
NCT06606119
Flourish: Exploring the Early Infant Gut Microbiome
Seeding
NCT07333482
Effects of Cannabidiol and Tetrahydrocannabinol on Microbiome and Neuroinflammation in HIV
University of California, San Diego
NCT05514899
MOdification Of THe Early-Life Respiratory Microbiome Through Vaginal SEEDing
Vanderbilt University Medical Center
NCT05505110
Alterations of the Microbiome During Critical Illness With Short and Long Term Clinical Outcomes
University of Chicago
NCT04552834
Maternal & Offspring Microbiome Study
Stanford University
NCT05123612
IGNITE Firefighters' Health
Stanford University
NCT06567561
Infant Restore: Efficacy of Microbiome Analysis and Education
Seeding
NCT06424691
Alcoholic Liver Disease and the Gut Microbiome
University of California, Los Angeles
NCT05007470
Investigating the Detection of Bovine and Soy Proteins in Human Milk
University of Idaho
NCT04851340
Evaluation of Two Regimens, With Healthy Male and Female Babies, Ages 3-6 Months Old, Using Various Assessments.
Johnson & Johnson Consumer Inc. (J&JCI)
NCT03457857
SWAP-MEAT: Study With Appetizing Plant Food - Meat Eating Alternatives Trial
Stanford University
NCT03718988
Effect of Strawberry Consumption on the Microbiome
University of California, Los Angeles
NCT04217122
Phase Distribution
| Phase | Trial count |
|---|---|
| Phase 1 | 1 |
| Phase 2 | 1 |
Top Sponsors
Named interventions
Most-linked intervention names on Microbiome records (sponsor-reported on ClinicalTrials.gov). Counts are trial links, not unique products.
US sites by state
Facility locations filed on Microbiome 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 Microbiome page
13 registered trials, 4 currently recruiting, is a starting point for a conversation, not a diagnosis or a recommendation.
- 4 Microbiome trials are currently recruiting, check eligibility criteria before contacting a site. Browse recruiting trials
- Stanford University sponsors the most Microbiome trials on record, review their full trial history before evaluating a specific study. See Stanford University'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 Microbiome condition card totals 13 registered trials; most-linked intervention Consult Call; top US site state California. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.