Clinical trials
Withdrawn Phase 2 trials in the United States
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
1,123 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2000 | 2 |
| 2001 | 2 |
| 2002 | 4 |
| 2003 | 5 |
| 2004 | 8 |
| 2005 | 10 |
| 2006 | 23 |
| 2007 | 29 |
| 2008 | 37 |
| 2009 | 38 |
| 2010 | 44 |
| 2011 | 32 |
| 2012 | 42 |
| 2013 | 48 |
| 2014 | 45 |
| 2015 | 58 |
| 2016 | 62 |
| 2017 | 35 |
| 2018 | 64 |
| 2019 | 60 |
| 2020 | 68 |
| 2021 | 64 |
| 2022 | 81 |
| 2023 | 52 |
| 2024 | 38 |
| 2025 | 48 |
| 2026 | 35 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Withdrawn | 1,123 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| M.D. Anderson Cancer Center | 25 |
| National Cancer Institute (NCI) | 21 |
| Massachusetts General Hospital | 20 |
| NYU Langone Health | 17 |
| Yale University | 17 |
| Stanford University | 14 |
| Wake Forest University Health Sciences | 14 |
| University of Chicago | 13 |
| University of Colorado, Denver | 13 |
| University of Minnesota | 12 |
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 | 35 |
| Carcinoma, Non-Small-Cell Lung | 35 |
| Multiple Myeloma | 35 |
| Prostatic Neoplasms | 30 |
| COVID-19 | 27 |
| Neoplasm Metastasis | 25 |
| Neoplasms | 24 |
| Colorectal Neoplasms | 23 |
| Leukemia, Myeloid, Acute | 23 |
| Leukemia, Lymphocytic, Chronic, B-Cell | 21 |
Trials
Showing 1 to 25 of 1,123. Each trial links to its page on Pharma Observatory.
1,023 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.