Medical Information Only. Consult your healthcare provider before considering clinical trial enrollment.
Klippel-Trenaunay Syndrome: early-phase trial registry
3 of 4 indexed Klippel-Trenaunay Syndrome trials are currently recruiting, with more weight in Phase 1-2.
Corpus placement: #4,115 of 28,707 conditions by registered trial count.
4 US clinical trials · 3 currently recruiting · #4,115 of 28,707 conditions by registered trial count
Klippel-Trenaunay Syndrome: 4 US clinical trials tracked, 3 recruiting.
Klippel-Trenaunay Syndrome is the subject of 4 registered US clinical trials on ClinicalTrials.gov, 3 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 Sonablate, running 1 of these trials.
Enrollment posture brief
Registry condition klippel-trenaunay-syndrome
OPEN 3 | RECR 75% | LATE 0 | EARLY 1 | RANK #4115 | SPON 1
Volume-matched condition peers
Nearest open-share peer: Activity, Motor (75% recruiting · 8 trials)
Klippel-Trenaunay Syndrome lists 3 open slots (75% 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 Klippel-Trenaunay Syndrome 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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Klippel-Trenaunay Syndrome is recruiting above its size-band peers.
3 of 4 indexed trials (75%) 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
Lymphatic Anomalies Registry for the Assessment of Outcome Data
Boston Children's Hospital
NCT02399527
Identification of Biomarkers for Patients with Vascular Anomalies
Children's Hospital Medical Center, Cincinnati
NCT03001180
A Phase 2 Study of Mutant-selective PI3Kα Inhibitor, RLY-2608, in Adults and Children With PIK3CA Related Overgrowth Spectrum and Malformations Driven by PIK3CA Mutation
Relay Therapeutics
NCT06789913
Safety of the Sonablate HIFU System for the Ablation of Incompetent Veins of the Periphery
Sonablate
NCT06642051
Phase Distribution
| Phase | Trial count |
|---|---|
| Phase 2 | 1 |
Top Sponsors
Named interventions
Most-linked intervention names on Klippel-Trenaunay Syndrome records (sponsor-reported on ClinicalTrials.gov). Counts are trial links, not unique products.
US sites by state
Facility locations filed on Klippel-Trenaunay Syndrome 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 Klippel-Trenaunay Syndrome page
4 registered trials, 3 currently recruiting, is a starting point for a conversation, not a diagnosis or a recommendation.
- 3 Klippel-Trenaunay Syndrome trials are currently recruiting, check eligibility criteria before contacting a site. Browse recruiting trials
- Sonablate sponsors the most Klippel-Trenaunay Syndrome trials on record, review their full trial history before evaluating a specific study. See Sonablate'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 Klippel-Trenaunay Syndrome condition card totals 4 registered trials; most-linked intervention High Intensity focused ultrasound; top US site state Massachusetts. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.