Medical Information Only. Consult your healthcare provider before considering clinical trial enrollment.
Trisomy 18 clinical trials
A small indexed set (3 trials) with no open enrollment listed right now.
Corpus placement: #5,209 of 28,707 conditions by registered trial count.
3 US clinical trials · none currently recruiting · #5,209 of 28,707 conditions by registered trial count
Trisomy 18: 3 US clinical trials tracked, none currently recruiting.
Trisomy 18 is the subject of 3 registered US clinical trials on ClinicalTrials.gov, none currently recruiting. The most active sponsor is Natera, running 3 of these trials.
Enrollment posture brief
Registry condition trisomy-18
OPEN 0 | RECR 0% | LATE 0 | EARLY 0 | RANK #5209 | SPON 3
Volume-matched condition peers
Nearest open-share peer: Accelerated Phase Chronic Myelogenous Leukemia (0% recruiting · 12 trials)
Trisomy 18 has no open enrollment in this registry pull (3 archived studies). Peers show how other volume-matched labels compare on open share. How peer matching works →
Key findings
What ClinicalTrials.gov does not surface for Trisomy 18 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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Trisomy 18 is recruiting below its size-band peers.
0 of 3 indexed trials (0%) 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.
Indexed trials (enrollment closed)
3 total, page 1 of 1
Development of Non-invasive Prenatal Screening Test for Microdeletions Based on Fetal DNA Isolated From Maternal Blood
Natera
NCT01852708
Multiple Gestation Study
Natera
NCT02278536
Verification of Risk Assignment for Whole Chromosome Using SNP-based NIPT in Vanishing Twin Pregnancies
Natera
NCT05004337
Phase Distribution
Phase data not available
Top Sponsors
US sites by state
Facility locations filed on Trisomy 18 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 Trisomy 18 page
3 registered trials, 0 currently recruiting, is a starting point for a conversation, not a diagnosis or a recommendation.
- No Trisomy 18 trials are currently recruiting in this registry; that can change as new trials post, or check the broader research index. Browse research indexes
- Natera sponsors the most Trisomy 18 trials on record, review their full trial history before evaluating a specific study. See Natera'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 Trisomy 18 condition card totals 3 registered trials; top US site state New York. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.