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Comparison

ClinicalTrials.gov vs WHO ICTRP

Pick ClinicalTrials.gov when

  • Sponsors of FDA-regulated US trials
  • University research compliance offices
  • Systematic-review researchers
  • Patient power-users hunting trials

When ClinicalTrials.gov is not a fit

  • Patients wanting simple, guided trial matching . the UX will fight you
  • Anyone expecting curated, quality-vetted listings
  • Sales or marketing teams . nothing here for you
  • Small clinics lacking staff to handle mandatory reporting duties

Sources

  1. Home | ClinicalTrials.govclinicaltrials.gov
    official
  2. Frequently Asked Questionsclinicaltrials.gov
    official
  3. FDAAA 801 and the Final Ruleclinicaltrials.gov
    official
  4. Data and APIclinicaltrials.gov
    official
  5. Expert Searchclinicaltrials.gov
    official
  6. How to avoid common problems when using ClinicalTrials.gov (BMJ, 2018)bmj.com
    review
  7. 10-Year Update on Study Results Submitted (NEJM, 2019)nejm.org
    review
  8. FDA and NIH let sponsors keep results secret (Science, 2020)science.org
    news
  9. FDA violation notice for submission omissionhlc.com
    news
  10. FDA signals heightened enforcement focus (2026)hlc.com
    news
  11. Reddit: clinicaltrials.gov is the most mind-numbingly awful sitereddit.com
    review
  12. Reddit: hard to navigatereddit.com
    review
  13. Elsevier adds 500K records to Embaseclinicallab.com
    news
  14. WHO: clinical trials databaseswho.int
    official
  15. Celebrating 25 Years of ClinicalTrials.govabout.citiprogram.org
    news
  16. Product security pageclinicaltrials.gov
    security