Clinical trials
Observational Breast Neoplasms trials in the United States
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
1,006 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2000 | 10 |
| 2001 | 14 |
| 2002 | 11 |
| 2003 | 23 |
| 2004 | 18 |
| 2005 | 34 |
| 2006 | 44 |
| 2007 | 51 |
| 2008 | 54 |
| 2009 | 60 |
| 2010 | 52 |
| 2011 | 39 |
| 2012 | 36 |
| 2013 | 37 |
| 2014 | 41 |
| 2015 | 41 |
| 2016 | 31 |
| 2017 | 44 |
| 2018 | 34 |
| 2019 | 44 |
| 2020 | 25 |
| 2021 | 42 |
| 2022 | 46 |
| 2023 | 41 |
| 2024 | 37 |
| 2025 | 40 |
| 2026 | 24 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 599 |
| Recruiting | 127 |
| Terminated | 89 |
| Active, not recruiting | 68 |
| Unknown status | 58 |
| Withdrawn | 35 |
| Not yet recruiting | 11 |
| Suspended | 10 |
| Enrolling by invitation | 9 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| Memorial Sloan Kettering Cancer Center | 79 |
| Mayo Clinic | 53 |
| National Cancer Institute (NCI) | 53 |
| M.D. Anderson Cancer Center | 48 |
| UNC Lineberger Comprehensive Cancer Center | 25 |
| Pfizer | 19 |
| Abramson Cancer Center at Penn Medicine | 18 |
| Stanford University | 18 |
| Case Comprehensive Cancer Center | 16 |
| Wake Forest University Health Sciences | 15 |
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 | 1,006 |
| Lung Neoplasms | 84 |
| Neoplasms | 73 |
| Prostatic Neoplasms | 70 |
| Ovarian Neoplasms | 60 |
| Colorectal Neoplasms | 55 |
| Colonic Neoplasms | 48 |
| Melanoma | 37 |
| Pancreatic Neoplasms | 31 |
| Neoplasm Metastasis | 29 |
Trials
Showing 1 to 25 of 1,006. Each trial links to its page on Pharma Observatory.
906 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.