Clinical trials
Breast Neoplasms trials in the United States
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
5,784 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2000 | 79 |
| 2001 | 101 |
| 2002 | 104 |
| 2003 | 128 |
| 2004 | 164 |
| 2005 | 180 |
| 2006 | 229 |
| 2007 | 247 |
| 2008 | 244 |
| 2009 | 264 |
| 2010 | 235 |
| 2011 | 205 |
| 2012 | 206 |
| 2013 | 213 |
| 2014 | 231 |
| 2015 | 249 |
| 2016 | 220 |
| 2017 | 263 |
| 2018 | 216 |
| 2019 | 243 |
| 2020 | 191 |
| 2021 | 251 |
| 2022 | 236 |
| 2023 | 233 |
| 2024 | 203 |
| 2025 | 208 |
| 2026 | 178 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 3,318 |
| Terminated | 773 |
| Recruiting | 669 |
| Active, not recruiting | 513 |
| Unknown status | 225 |
| Withdrawn | 174 |
| Not yet recruiting | 63 |
| Suspended | 28 |
| Enrolling by invitation | 15 |
| Approved for marketing | 3 |
| Available | 2 |
| No longer available | 1 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| National Cancer Institute (NCI) | 273 |
| Memorial Sloan Kettering Cancer Center | 230 |
| M.D. Anderson Cancer Center | 201 |
| Mayo Clinic | 134 |
| Dana-Farber Cancer Institute | 133 |
| Novartis Pharmaceuticals | 91 |
| Pfizer | 90 |
| City of Hope Medical Center | 77 |
| UNC Lineberger Comprehensive Cancer Center | 76 |
| Alliance for Clinical Trials in Oncology | 75 |
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 | 5,784 |
| Ovarian Neoplasms | 410 |
| Neoplasms | 388 |
| Lung Neoplasms | 363 |
| Prostatic Neoplasms | 350 |
| Colorectal Neoplasms | 344 |
| Neoplasm Metastasis | 307 |
| Triple Negative Breast Neoplasms | 286 |
| Carcinoma, Non-Small-Cell Lung | 270 |
| Pancreatic Neoplasms | 244 |
Trials
Showing 51 to 75 of 5,784. Each trial links to its page on Pharma Observatory.
5,684 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.