Medical Information Only. Consult your healthcare provider before considering clinical trial enrollment.
MPS Iiia: early-phase trial registry
1 of 1 indexed MPS Iiia trials are currently recruiting, with more weight in Phase 1-2.
Corpus placement: #11,370 of 28,707 conditions by registered trial count.
1 US clinical trials · 1 currently recruiting · #11,370 of 28,707 conditions by registered trial count
MPS Iiia: 1 US clinical trial tracked, 1 recruiting.
MPS Iiia is the subject of 1 registered US clinical trials on ClinicalTrials.gov, 1 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 Ultragenyx Pharmaceutical, running 1 of these trials.
Enrollment posture brief
Registry condition mps-iiia
OPEN 1 | RECR 100% | LATE 0 | EARLY 1 | RANK #11370 | SPON 1
Volume-matched condition peers
Nearest open-share peer: Aortic Arch Aneurysm (100% recruiting · 5 trials)
MPS Iiia lists 1 open slots (100% of 1 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 MPS Iiia 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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MPS Iiia is recruiting above its size-band peers.
1 of 1 indexed trials (100%) 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
1 total, page 1 of 1
Phase Distribution
| Phase | Trial count |
|---|---|
| Phase 2 | 1 |
Top Sponsors
Named interventions
Most-linked intervention names on MPS Iiia records (sponsor-reported on ClinicalTrials.gov). Counts are trial links, not unique products.
US sites by state
Facility locations filed on MPS Iiia 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 MPS Iiia page
1 registered trials, 1 currently recruiting, is a starting point for a conversation, not a diagnosis or a recommendation.
- 1 MPS Iiia trials are currently recruiting, check eligibility criteria before contacting a site. Browse recruiting trials
- Ultragenyx Pharmaceutical sponsors the most MPS Iiia trials on record, review their full trial history before evaluating a specific study. See Ultragenyx Pharmaceutical'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 MPS Iiia condition card totals 1 registered trials; most-linked intervention Adjuvant IM Therapy; top US site state Pennsylvania. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.