Medical Information Only. Consult your healthcare provider before considering clinical trial enrollment.
Antiphospholipid Syndrome: full-pipeline trial registry
4 of 7 indexed Antiphospholipid Syndrome trials are currently recruiting.
Corpus placement: #2,497 of 28,707 conditions by registered trial count.
7 US clinical trials · 4 currently recruiting · #2,497 of 28,707 conditions by registered trial count
Antiphospholipid Syndrome: 7 US clinical trials tracked, 4 recruiting.
Antiphospholipid Syndrome is the subject of 7 registered US clinical trials on ClinicalTrials.gov, 4 of them currently open to new participants. 1 are in Phase 3-4 (later-stage) and 1 in Phase 1-2 (earlier-stage). The most active sponsor is Hospital for Special Surgery, New York, running 2 of these trials.
Enrollment posture brief
Registry condition antiphospholipid-syndrome
OPEN 4 | RECR 57% | LATE 1 | EARLY 1 | RANK #2497 | SPON 2
Volume-matched condition peers
Nearest open-share peer: Adverse Childhood Experiences (57% recruiting · 14 trials)
Antiphospholipid Syndrome lists 4 open slots (57% of 7 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 Antiphospholipid 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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Antiphospholipid Syndrome is recruiting above its size-band peers.
4 of 7 indexed trials (57.1%) 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 Antiphospholipid Syndrome research.
Hospital for Special Surgery, New York accounts for 2 of 7 trials (28.6%). 6 distinct sponsors appear on at least one study for this condition label.
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Typical Antiphospholipid Syndrome enrolment sits around 63 participants.
Median target enrolment is 63 among the 7 trials that report a genuine target (sentinel values excluded). 4 of those (57.1%) plan for fewer than 100 participants.
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Antiphospholipid Syndrome research leans observational.
2 interventional and 5 observational studies make up this index (28.6% interventional). Study type is sponsor-reported on ClinicalTrials.gov.
Open and recent trials
7 total, page 1 of 1
Rheumatology Patient Registry and Biorepository
Yale University
NCT04402086
Genetic Risk Factors Associated With Antiphospholipid Antibody Syndrome
Duke University
NCT00482794
Predictors of Pregnancy Outcome in Systemic Lupus Erythematosus (SLE) and Antiphospholipid Syndrome (APS)
Hospital for Special Surgery, New York
NCT00198068
Register for Pediatric Patients With Antiphospholipid Syndrome (APS): European Project Extended Internationally Study
University of California, Davis
NCT00616317
Reliability of Point-of-care INR Measurements in Patients With Antiphospholipid-antibody Syndrome Treated With Warfarin
University of North Carolina, Chapel Hill
NCT00878137
Apixaban for Secondary Prevention of Thromboembolism Among Patients With AntiphosPholipid Syndrome
Scott C. Woller, MD
NCT02295475
Effects of Fluvastatin on Proinflammatory and Prothrombotic Markers in Antiphospholipid Syndrome Patients
Hospital for Special Surgery, New York
NCT00674297
Phase Distribution
| Phase | Trial count |
|---|---|
| Phase 2 | 1 |
| Phase 4 | 1 |
Top Sponsors
Named interventions
Most-linked intervention names on Antiphospholipid Syndrome records (sponsor-reported on ClinicalTrials.gov). Counts are trial links, not unique products.
US sites by state
Facility locations filed on Antiphospholipid 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 Antiphospholipid Syndrome page
7 registered trials, 4 currently recruiting, is a starting point for a conversation, not a diagnosis or a recommendation.
- 4 Antiphospholipid Syndrome trials are currently recruiting, check eligibility criteria before contacting a site. Browse recruiting trials
- Hospital for Special Surgery, New York sponsors the most Antiphospholipid Syndrome trials on record, review their full trial history before evaluating a specific study. See Hospital for Special Surgery, New York'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 Antiphospholipid Syndrome condition card totals 7 registered trials; most-linked intervention INR by point-of-care instruments and venopuncture; top US site state Utah. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.