Clinical trials
Completed Observational Breast Neoplasms trials
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
1,428 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2000 | 18 |
| 2001 | 15 |
| 2002 | 12 |
| 2003 | 22 |
| 2004 | 26 |
| 2005 | 38 |
| 2006 | 53 |
| 2007 | 67 |
| 2008 | 77 |
| 2009 | 66 |
| 2010 | 77 |
| 2011 | 68 |
| 2012 | 72 |
| 2013 | 55 |
| 2014 | 59 |
| 2015 | 74 |
| 2016 | 61 |
| 2017 | 66 |
| 2018 | 59 |
| 2019 | 63 |
| 2020 | 54 |
| 2021 | 69 |
| 2022 | 81 |
| 2023 | 57 |
| 2024 | 45 |
| 2025 | 26 |
| 2026 | 5 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 1,428 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| AstraZeneca | 50 |
| Memorial Sloan Kettering Cancer Center | 47 |
| National Cancer Institute (NCI) | 47 |
| Pfizer | 41 |
| Hoffmann-La Roche | 37 |
| Mayo Clinic | 30 |
| M.D. Anderson Cancer Center | 29 |
| Fudan University | 23 |
| Novartis Pharmaceuticals | 21 |
| UNC Lineberger Comprehensive Cancer Center | 18 |
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 | 1,428 |
| Neoplasms | 84 |
| Lung Neoplasms | 74 |
| Prostatic Neoplasms | 58 |
| Colorectal Neoplasms | 51 |
| Ovarian Neoplasms | 48 |
| Colonic Neoplasms | 46 |
| Neoplasm Metastasis | 32 |
| Carcinoma, Intraductal, Noninfiltrating | 29 |
| Carcinoma, Non-Small-Cell Lung | 27 |
Trials
Showing 1 to 25 of 1,428. Each trial links to its page on Pharma Observatory.
1,328 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.