Medical Information Only. Consult your healthcare provider before considering clinical trial enrollment.
Gastric Bypass: early-phase trial registry
1 of 5 indexed Gastric Bypass trials are currently recruiting, with more weight in Phase 1-2.
Corpus placement: #3,391 of 28,707 conditions by registered trial count.
5 US clinical trials · 1 currently recruiting · #3,391 of 28,707 conditions by registered trial count
Gastric Bypass: 5 US clinical trials tracked, 1 recruiting.
Gastric Bypass is the subject of 5 registered US clinical trials on ClinicalTrials.gov, 1 of them currently open to new participants. 0 are in Phase 3-4 (later-stage) and 2 in Phase 1-2 (earlier-stage). The most active sponsor is Gundersen Lutheran Medical Foundation, running 1 of these trials.
Enrollment posture brief
Registry condition gastric-bypass
OPEN 1 | RECR 20% | LATE 0 | EARLY 2 | RANK #3391 | SPON 1
Volume-matched condition peers
Nearest open-share peer: Accelerated Phase Chronic Myelogenous Leukemia, BCR-ABL1 Positive (20% recruiting · 10 trials)
Gastric Bypass lists 1 open slots (20% of 5 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 Gastric Bypass 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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Gastric Bypass is recruiting below its size-band peers.
1 of 5 indexed trials (20%) 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 Gastric Bypass research.
Gundersen Lutheran Medical Foundation accounts for 1 of 5 trials (20%). 5 distinct sponsors appear on at least one study for this condition label.
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Most Gastric Bypass trials plan to enrol fewer than 100 people.
Median target enrolment is 50 among the 5 trials that report a genuine target (sentinel values excluded). 3 of those (60%) plan for fewer than 100 participants.
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Gastric Bypass research is mostly interventional.
4 interventional and 1 observational studies make up this index (80% interventional). Study type is sponsor-reported on ClinicalTrials.gov.
Open and recent trials
5 total, page 1 of 1
The Effects of Bariatric Surgeries on Glucose Metabolism
The University of Texas Health Science Center at San Antonio
NCT02823665
Napoleon Measurement of Gastrojejunal Anastomosis
NYU Langone Health
NCT04832282
SH Dr. Chen Gastric Bypass Study
Sanford Health
NCT05357443
Bone Loss After Laparoscopic Roux-en-Y Gastric Bypass
Gundersen Lutheran Medical Foundation
NCT00975013
Glucose Metabolism in the Immediate and Short Term Follow up After Bariatric Surgery
The Cleveland Clinic
NCT00488423
Phase Distribution
| Phase | Trial count |
|---|---|
| Phase 1 | 2 |
Top Sponsors
Named interventions
Most-linked intervention names on Gastric Bypass records (sponsor-reported on ClinicalTrials.gov). Counts are trial links, not unique products.
US sites by state
Facility locations filed on Gastric Bypass 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 Gastric Bypass page
5 registered trials, 1 currently recruiting, is a starting point for a conversation, not a diagnosis or a recommendation.
- 1 Gastric Bypass trials are currently recruiting, check eligibility criteria before contacting a site. Browse recruiting trials
- Gundersen Lutheran Medical Foundation sponsors the most Gastric Bypass trials on record, review their full trial history before evaluating a specific study. See Gundersen Lutheran Medical Foundation'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 Gastric Bypass condition card totals 5 registered trials; most-linked intervention Mixed Meal Tolerance test, Hyperglycemic clamp; top US site state Wisconsin. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.