Last reviewed · How we verify
NCT04907396: IWCR
International Weight Control Registry
trial in Weight Loss in 100,000 participants. Currently enrolling.
1 December 2025
Quick facts
| Lead sponsor | Tufts University |
|---|---|
| Status | Recruiting now |
| Study type | OBSERVATIONAL |
| Enrollment | 100,000 |
| Start date | 10 December 2020 |
| Primary completion | 1 December 2025 |
| Estimated completion | 1 December 2025 |
| Sites | 7 locations across United States |
Conditions studied
- Weight Loss — all drugs for Weight Loss →
- Overweight — all drugs for Overweight →
- Obesity — all drugs for Obesity →
Sponsor
Tufts University
Who can join
18 and older, any sex, with Weight Loss or Overweight. Patients with the condition only — healthy volunteers not accepted.
Sponsor's own description
The IWCR is a global scientific study aimed at better understanding the opportunities and barriers for reducing the prevalence of obesity by collecting information from people who have experience with weight management in their everyday lives. The investigators seek to gather information on a wide range of weight management experiences, ranging from weight loss and weight loss maintenance to weight gain and inability to lose weight.
Publications & conference data
No peer-reviewed publications indexed yet for this trial.
Verify or expand the search:
- PubMed search for NCT04907396
- Europe PMC full search
- ASCO Meeting Library
- ESMO Meeting Library
- bioRxiv preprints
- medRxiv preprints
- Google Scholar
Related trials
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- NCT06785064 — Optimizing an Extended Care Intervention to Promote Weight Loss Maintenance · NA · recruiting
- NCT07165431 — Effect of a Postbiotic Supplementation in Overweight and Obese Subjects: A Randomized Controlled Trial (PARABIOTICS-2). · NA · recruiting
Other Tufts University trials
Trials by the same sponsor.
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Verify against primary sources
- ClinicalTrials.gov — authoritative US registry record
- WHO ICTRP — international registry index
- EU Clinical Trials Register
- Sponsor press releases (Google)
- Trial protocol + status: ClinicalTrials.gov NCT04907396 (US National Library of Medicine, public domain)
- Drug + disease cross-links: matched in real time against Drug Landscape's normalised drug + company + condition tables
- Sponsor: as reported to ClinicalTrials.gov by Tufts University
- Last refreshed: 19 September 2024
Drug Landscape aggregates and links these public records for informational use only. Always verify against the primary source before clinical or regulatory decisions. Canonical URL: https://druglandscape.com/trial/NCT04907396.
Primary sources · FDA · ClinicalTrials.gov · EMA · SEC EDGAR · ChEMBL · Wikidata · full sourcing