ClinicalTrials.gg
Sign In

Breast Diseases clinical trials

The registry lists 148 studies for Breast Diseases across more than 10 countries. 26 are recruiting or about to start. 47 of them are mainly about Breast Diseases (how this is decided). Per ClinicalTrials.gov, last updated 2026-11-04. Counting its 14 narrower conditions too, such as Breast Neoplasms: 15,928 studies, 3,688 open.

Get an email when these change. Save the Breast Diseases studies recruiting or about to start — once a week, free: studies that open, close, add sites or post results.

Watch these studies
See an example email

Example · made-up studies

Breast cancer · Recruiting: 2 came in, 3 changed

What changed in your saved searches, Oct 31 – Nov 6:

A study of drug A after surgery for early breast cancer

Came in · now Recruiting

Drug B with hormone therapy in advanced breast cancer

Changed

· Sites: 4 added, including Seoul and Busan

· Enrollment: 300 → 450 participants

Exercise during chemotherapy

Now Active, not recruiting

One email a week for all your saved searches. Stop any time.

Status

Completed
74
Status unknown
23
Recruiting
20
Active, not recruiting
14
Terminated
7
Enrolling by invitation
3

Phase

Phase 3
21
Phase 2
20
Phase 1
13
Phase 4
6
Early Phase 1
2

Where

United States
55
China
21
Italy
15
United Kingdom
14
Canada
13
France
13

Who runs them

AstraZeneca (4) · Sysmex America, Inc. (4) · Syndax Pharmaceuticals (4) · Novartis Pharmaceuticals (3) · Medipol University (3) · Ma Zhe (3) · Zhejiang Cancer Hospital (2) · Huazhong University of Science and Technology (2)

What is being tested here

Drugs under test in Breast Diseases studies, those with the most open studies first. Medicines only given beside them are not counted. How drugs are counted

DrugOpenPhase 3All
AZD9833133
Letrozole113
Tamoxifen112
Suzetrigine101
Elacestrant101
STX-478101
Dalpiciclib101
Sacubitril valsartan101
Entinostat004
Pyrotinib004

Drug classes tested here SERDs (estrogen receptor degraders) 2 open · Aromatase inhibitors 1 open · Tyrosine kinase inhibitors (TKIs) 5 · Opioids 4

Coming up

6phase 3 studies under way
11studies finish main data collection within a year2 of them phase 3

Studies recruiting or running, from their records. “Main data collection” ends at the primary completion date, the sponsor’s own estimate, which often moves.

The 10 nearest, phase 3 first

Who these studies take

Of the 20 Breast Diseases studies recruiting now, 14 (70%) set no upper age limit and 2 (10%) stop at 75 or younger. 2 (10%) take children under 18. 11 (55%) are for women only and 0 (0%) for men only; 4 (20%) take healthy volunteers.

Recruiting studies that take each age, of 20
AgeWomenMen
102 (10%)1 (5%)
1818 (90%)8 (40%)
3018 (90%)8 (40%)
4018 (90%)8 (40%)
5019 (95%)8 (40%)
6519 (95%)8 (40%)
7519 (95%)8 (40%)
8517 (85%)8 (40%)

Across all 148 studies, recruiting or not: 26% stop at 75 or younger and 12% at 65; 9% take children; 70% are for women only and 1% for men only; 22% take healthy volunteers. From each study’s registry entry; the criteria on its page decide.

How long Breast Diseases studies take

Of 26 interventional studies with no phase under Breast Diseases, half reached primary completion within 31 months of starting, counting those still running.

Start to primary completionEvery sponsorIndustryNon-industry
Interventional, no phase31 mo14–63 · 26 studies——
Observational35 mo19–147 · 19 studies——

Each figure is the month by which half the studies had reached primary completion, with the range in which the middle half did. Studies still running count until their last registry update; studies that stopped early are left out. Phase 1 includes early phase 1; observational means prospective or not stated, as retrospective and cross-sectional studies date a window of data rather than a study. How these figures are worked out

What changed recently

From the registry's own updates since Oct 13, 2026.

Newly registered1

Studies

Recruiting first, then most recently updated. Showing 50 of 148. Browse all 148 → or search them.