Clinical trials
Suspended Phase 1 trials in the United States
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
133 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2004 | 1 |
| 2005 | 1 |
| 2006 | 3 |
| 2007 | 4 |
| 2008 | 4 |
| 2009 | 4 |
| 2010 | 3 |
| 2011 | 3 |
| 2012 | 4 |
| 2013 | 2 |
| 2014 | 3 |
| 2016 | 1 |
| 2017 | 4 |
| 2018 | 3 |
| 2019 | 4 |
| 2020 | 11 |
| 2021 | 12 |
| 2022 | 10 |
| 2023 | 13 |
| 2024 | 16 |
| 2025 | 13 |
| 2026 | 11 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Suspended | 133 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| City of Hope Medical Center | 13 |
| National Cancer Institute (NCI) | 8 |
| M.D. Anderson Cancer Center | 5 |
| Piramal Enterprises Limited | 4 |
| H. Lee Moffitt Cancer Center and Research Institute | 3 |
| Northwell Health | 3 |
| University of Alabama at Birmingham | 3 |
| Washington University School of Medicine | 3 |
| AstraZeneca | 2 |
| Boehringer Ingelheim | 2 |
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 |
|---|---|
| Leukemia, Myeloid, Acute | 13 |
| Neoplasms | 11 |
| Breast Neoplasms | 8 |
| Myelodysplastic Syndromes | 7 |
| Neoplasm Metastasis | 7 |
| Ovarian Neoplasms | 7 |
| Colorectal Neoplasms | 6 |
| Lung Neoplasms | 6 |
| Melanoma | 6 |
| Precursor Cell Lymphoblastic Leukemia-Lymphoma | 6 |
Trials
Showing 1 to 25 of 133. Each trial links to its page on Pharma Observatory.
33 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.