Clinical trials
Phase 1 trials
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
55,368 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2000 | 264 |
| 2001 | 323 |
| 2002 | 425 |
| 2003 | 552 |
| 2004 | 812 |
| 2005 | 1,011 |
| 2006 | 1,296 |
| 2007 | 1,585 |
| 2008 | 1,852 |
| 2009 | 2,104 |
| 2010 | 2,171 |
| 2011 | 2,193 |
| 2012 | 2,041 |
| 2013 | 2,093 |
| 2014 | 2,392 |
| 2015 | 2,273 |
| 2016 | 2,321 |
| 2017 | 2,362 |
| 2018 | 2,490 |
| 2019 | 2,643 |
| 2020 | 2,703 |
| 2021 | 3,089 |
| 2022 | 2,999 |
| 2023 | 2,937 |
| 2024 | 3,048 |
| 2025 | 3,041 |
| 2026 | 2,862 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 35,480 |
| Recruiting | 4,898 |
| Unknown status | 4,608 |
| Terminated | 4,405 |
| Active, not recruiting | 1,949 |
| Withdrawn | 1,837 |
| Not yet recruiting | 1,789 |
| Suspended | 220 |
| Enrolling by invitation | 182 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| Pfizer | 1,117 |
| Boehringer Ingelheim | 1,063 |
| GlaxoSmithKline | 1,043 |
| AstraZeneca | 967 |
| National Cancer Institute (NCI) | 959 |
| National Institute of Allergy and Infectious Diseases (NIAID) | 827 |
| Eli Lilly and Company | 789 |
| Merck Sharp & Dohme LLC | 640 |
| M.D. Anderson Cancer Center | 557 |
| Bristol-Myers Squibb | 484 |
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 |
|---|---|
| Neoplasms | 2,151 |
| Breast Neoplasms | 1,412 |
| Carcinoma, Non-Small-Cell Lung | 1,300 |
| Diabetes Mellitus, Type 2 | 1,041 |
| Leukemia, Myeloid, Acute | 1,037 |
| Neoplasm Metastasis | 946 |
| HIV Infections | 857 |
| Melanoma | 838 |
| Multiple Myeloma | 829 |
| Colorectal Neoplasms | 826 |
Trials
Showing 1 to 25 of 55,368. Each trial links to its page on Pharma Observatory.
55,268 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.