Medical Information Only. Consult your healthcare provider before considering clinical trial enrollment.
Microscopic Polyangiitis (MPA): later-stage trial registry
1 of 2 indexed Microscopic Polyangiitis (MPA) trials are currently recruiting, with more weight in Phase 3-4.
Corpus placement: #7,188 of 28,707 conditions by registered trial count.
2 US clinical trials · 1 currently recruiting · #7,188 of 28,707 conditions by registered trial count
Microscopic Polyangiitis (MPA): 2 US clinical trials tracked, 1 recruiting.
Microscopic Polyangiitis (MPA) is the subject of 2 registered US clinical trials on ClinicalTrials.gov, 1 of them currently open to new participants. 1 are in Phase 3-4 (later-stage) and 0 in Phase 1-2 (earlier-stage). The most active sponsor is Peter Merkel, running 1 of these trials.
Enrollment posture brief
Registry condition microscopic-polyangiitis-mpa
OPEN 1 | RECR 50% | LATE 1 | EARLY 0 | RANK #7188 | SPON 1
Volume-matched condition peers
Nearest open-share peer: Abdominal Aortic Aneurysms (50% recruiting · 6 trials)
Microscopic Polyangiitis (MPA) lists 1 open slots (50% of 2 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 Microscopic Polyangiitis (MPA) 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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Microscopic Polyangiitis (MPA) is recruiting above its size-band peers.
1 of 2 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.
Open and recent trials
2 total, page 1 of 1
Clinical Transcriptomics in Systemic Vasculitis (CUTIS)
Peter Merkel
NCT03004326
Plasma Exchange and Glucocorticoids for Treatment of Anti-Neutrophil Cytoplasm Antibody (ANCA) - Associated Vasculitis
University of Pennsylvania
NCT00987389
Phase Distribution
| Phase | Trial count |
|---|---|
| Phase 3 | 1 |
Top Sponsors
Named interventions
Most-linked intervention names on Microscopic Polyangiitis (MPA) records (sponsor-reported on ClinicalTrials.gov). Counts are trial links, not unique products.
US sites by state
Facility locations filed on Microscopic Polyangiitis (MPA) 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 Microscopic Polyangiitis (MPA) page
2 registered trials, 1 currently recruiting, is a starting point for a conversation, not a diagnosis or a recommendation.
- 1 Microscopic Polyangiitis (MPA) trials are currently recruiting, check eligibility criteria before contacting a site. Browse recruiting trials
- Peter Merkel sponsors the most Microscopic Polyangiitis (MPA) trials on record, review their full trial history before evaluating a specific study. See Peter Merkel'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 Microscopic Polyangiitis (MPA) condition card totals 2 registered trials; most-linked intervention Glucocorticoids [Reduced Dose]; top US site state Virginia. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.