Medical Information Only. Consult your healthcare provider before considering clinical trial enrollment.
Atopy: early-phase trial registry
2 of 5 indexed Atopy trials are currently recruiting, with more weight in Phase 1-2.
Corpus placement: #3,391 of 28,707 conditions by registered trial count.
5 US clinical trials · 2 currently recruiting · #3,391 of 28,707 conditions by registered trial count
Atopy: 5 US clinical trials tracked, 2 recruiting.
Atopy is the subject of 5 registered US clinical trials on ClinicalTrials.gov, 2 of them currently open to new participants. 0 are in Phase 3-4 (later-stage) and 1 in Phase 1-2 (earlier-stage). The most active sponsor is Sydney Leibel, running 1 of these trials.
Enrollment posture brief
Registry condition atopy
OPEN 2 | RECR 40% | LATE 0 | EARLY 1 | RANK #3391 | SPON 1
Volume-matched condition peers
Nearest open-share peer: Achondroplasia (40% recruiting · 10 trials)
Atopy lists 2 open slots (40% of 5 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 Atopy 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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Atopy is recruiting below its size-band peers.
2 of 5 indexed trials (40%) 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 Atopy research.
Sydney Leibel accounts for 1 of 5 trials (20%). 5 distinct sponsors appear on at least one study for this condition label.
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Typical Atopy enrolment sits around 221 participants.
Median target enrolment is 221 among the 5 trials that report a genuine target (sentinel values excluded). 2 of those (40%) plan for fewer than 100 participants.
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Atopy research leans observational.
2 interventional and 3 observational studies make up this index (40% interventional). Study type is sponsor-reported on ClinicalTrials.gov.
Open and recent trials
5 total, page 1 of 1
NIAID Centralized Sequencing Protocol
National Institute of Allergy and Infectious Diseases (NIAID)
NCT03206099
Omalizumab Before Onset of Exacerbations
Children's National Research Institute
NCT05332067
Breast Milk: Influence of the Micro-transcriptome Profile on Atopy in Children Over Time
Milton S. Hershey Medical Center
NCT04017520
Microbiome, Atopic Disease, Prematurity
Sydney Leibel
NCT04835935
Imaging Study of the Lungs During an Allergic Asthma Attack
Massachusetts General Hospital
NCT01547286
Phase Distribution
| Phase | Trial count |
|---|---|
| Phase 2 | 1 |
Top Sponsors
Named interventions
Most-linked intervention names on Atopy records (sponsor-reported on ClinicalTrials.gov). Counts are trial links, not unique products.
US sites by state
Facility locations filed on Atopy 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 Atopy page
5 registered trials, 2 currently recruiting, is a starting point for a conversation, not a diagnosis or a recommendation.
- 2 Atopy trials are currently recruiting, check eligibility criteria before contacting a site. Browse recruiting trials
- Sydney Leibel sponsors the most Atopy trials on record, review their full trial history before evaluating a specific study. See Sydney Leibel'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 Atopy condition card totals 5 registered trials; most-linked intervention Nebulized methacholine inhalation; top US site state District of Columbia. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.