Medical Information Only. Consult your healthcare provider before considering clinical trial enrollment.
HPV Vaccine: later-stage trial registry
1 of 4 indexed HPV Vaccine trials are currently recruiting, with more weight in Phase 3-4.
Corpus placement: #4,115 of 28,707 conditions by registered trial count.
4 US clinical trials · 1 currently recruiting · #4,115 of 28,707 conditions by registered trial count
HPV Vaccine: 4 US clinical trials tracked, 1 recruiting.
HPV Vaccine is the subject of 4 registered US clinical trials on ClinicalTrials.gov, 1 of them currently open to new participants. 2 are in Phase 3-4 (later-stage) and 0 in Phase 1-2 (earlier-stage). The most active sponsor is University of Washington, running 2 of these trials.
Enrollment posture brief
Registry condition hpv-vaccine
OPEN 1 | RECR 25% | LATE 2 | EARLY 0 | RANK #4115 | SPON 2
Volume-matched condition peers
Nearest open-share peer: Abdominal Cancer (25% recruiting · 8 trials)
HPV Vaccine lists 1 open slots (25% of 4 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 HPV Vaccine 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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HPV Vaccine is recruiting below its size-band peers.
1 of 4 indexed trials (25%) 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
4 total, page 1 of 1
HPV Ends Here: Increasing Uptake of the HPV Vaccine
University of California, Davis
NCT06831929
Immunogenicity of Fractional Dose of the HPV Vaccines
University of Washington
NCT05291871
Intradermal, Fractional Dose of HPV Vaccines:
University of Washington
NCT04235257
State Immunization Information Systems to Improve HPV Vaccination Rates
University of Colorado, Denver
NCT02993965
Phase Distribution
| Phase | Trial count |
|---|---|
| Phase 4 | 2 |
Top Sponsors
Named interventions
Most-linked intervention names on HPV Vaccine records (sponsor-reported on ClinicalTrials.gov). Counts are trial links, not unique products.
US sites by state
Facility locations filed on HPV Vaccine 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 HPV Vaccine page
4 registered trials, 1 currently recruiting, is a starting point for a conversation, not a diagnosis or a recommendation.
- 1 HPV Vaccine trials are currently recruiting, check eligibility criteria before contacting a site. Browse recruiting trials
- University of Washington sponsors the most HPV Vaccine trials on record, review their full trial history before evaluating a specific study. See University of Washington'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 HPV Vaccine condition card totals 4 registered trials; most-linked intervention HPV vaccine; top US site state Washington. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.