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| Withdrawn | 1,837 |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 51 to 75 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.