Clinical trials
Trials in the United States
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
196,297 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2000 | 1,364 |
| 2001 | 1,645 |
| 2002 | 2,154 |
| 2003 | 2,919 |
| 2004 | 3,752 |
| 2005 | 4,575 |
| 2006 | 5,458 |
| 2007 | 5,980 |
| 2008 | 6,626 |
| 2009 | 6,850 |
| 2010 | 6,949 |
| 2011 | 6,924 |
| 2012 | 7,142 |
| 2013 | 7,436 |
| 2014 | 7,818 |
| 2015 | 8,070 |
| 2016 | 8,202 |
| 2017 | 9,417 |
| 2018 | 9,719 |
| 2019 | 9,827 |
| 2020 | 9,458 |
| 2021 | 10,778 |
| 2022 | 9,801 |
| 2023 | 9,722 |
| 2024 | 9,270 |
| 2025 | 9,163 |
| 2026 | 8,613 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 121,033 |
| Recruiting | 22,207 |
| Terminated | 20,521 |
| Active, not recruiting | 10,651 |
| Unknown status | 8,564 |
| Withdrawn | 6,747 |
| Not yet recruiting | 3,279 |
| Enrolling by invitation | 2,001 |
| Suspended | 809 |
| No longer available | 273 |
| Approved for marketing | 112 |
| Available | 85 |
| Temporarily not available | 15 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| National Cancer Institute (NCI) | 3,358 |
| Mayo Clinic | 3,114 |
| M.D. Anderson Cancer Center | 2,869 |
| Massachusetts General Hospital | 2,359 |
| National Institute of Allergy and Infectious Diseases (NIAID) | 2,092 |
| Stanford University | 1,970 |
| Memorial Sloan Kettering Cancer Center | 1,931 |
| Pfizer | 1,900 |
| University of California, San Francisco | 1,868 |
| Duke University | 1,857 |
Top conditions
MeSH conditions the trials were registered with, not their broader categories. A condition with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| Breast Neoplasms | 5,786 |
| Neoplasms | 4,936 |
| Obesity | 4,763 |
| Prostatic Neoplasms | 3,388 |
| Diabetes Mellitus, Type 2 | 3,223 |
| Carcinoma, Non-Small-Cell Lung | 3,214 |
| Diabetes Mellitus | 3,008 |
| HIV Infections | 2,780 |
| Pain | 2,662 |
| Lung Neoplasms | 2,422 |
Trials
Showing 76 to 100 of 196,297. Each trial links to its page on Pharma Observatory.
196,197 more trials match. See them on Pharma Observatory
Recently changed trials
Changes observed in the last 7 days, newest first, site-count changes left out. Source: ClinicalTrials.gov.
Go deeper on Pharma Observatory
Pharma Observatory connects clinical trials, sponsors, sites and investigators in one searchable platform.