Breast Cancer Trials / Trials in California
273 Recruiting Trials

Clinical Trials for Breast Cancer in California

273 clinical trials for Breast Cancer are currently recruiting participants at study sites in California. Study-related care is provided at no cost.

Showing 15 of 273 recruiting Breast Cancer trials in California

Phase 3 Study to Evaluate the Efficacy and Safety of HER2/Neu Peptide GLSI-100 (GP2 + GM-CSF) in HER2/Neu Positive Subjects
PHASE3 Duarte, California +4 sites NCT05232916
Recruiting
A Study Evaluating the Efficacy and Safety of Inavolisib Plus CDK4/6 Inhibitor and Letrozole vs Placebo + CDK4/6i and Letrozole in Participants With Endocrine-Sensitive PIK3CA-Mutated, Hormone Receptor-Positive, HER2-Negative Advanced Breast Cancer
PHASE3 Burbank, California +4 sites NCT06790693
Recruiting
Phase 3 Study of RLY-2608 + Fulvestrant vs Capivasertib + Fulvestrant as Treatment for Locally Advanced or Metastatic PIK3CA-mutant HR+/HER2- Breast Cancer
PHASE3 Beverly Hills, California +4 sites NCT06982521
Recruiting
Evaluating the Addition of Adjuvant Chemotherapy to Ovarian Function Suppression Plus Endocrine Therapy in Premenopausal Patients With pN0-1, ER-Positive/HER2-Negative Breast Cancer and an Oncotype Recurrence Score Less Than or Equal to 25
PHASE3 Birmingham, Alabama +4 sites NCT05879926
Recruiting
E-Mindfulness Approaches for Living After Breast Cancer
PHASE3 Anaheim, California +4 sites NCT06748222
Recruiting
A Phase III Study of Dato-DXd With or Without Durvalumab Compared With Investigator's Choice of Chemotherapy in Combination With Pembrolizumab in Patients With PD-L1 Positive Locally Recurrent Inoperable or Metastatic Triple-negative Breast Cancer (TROPION-Breast05)
PHASE3 Duarte, California +4 sites NCT06103864
Recruiting
Palazestrant in Combination With Ribociclib for the First-line Treatment of ER+/HER2- Advanced Breast Cancer
PHASE3 Beverly Hills, California +4 sites NCT07085767
Recruiting
Conventionally Fractionated vs. Hypofractionated Comprehensive Nodal Irradiation for Breast Cancer Using Pencil Beam Scanning Proton Therapy
PHASE3 San Diego, California +4 sites NCT05856773
Recruiting
A Study of Elacestrant Versus Standard Endocrine Therapy in Women and Men With ER+,HER2-, Early Breast Cancer With High Risk of Recurrence
PHASE3 Daphne, Alabama +4 sites NCT06492616
Recruiting
Phase 3 Study of Gedatolisib as First-Line Treatment for Patients With HR-Positive, HER2-Negative Advanced Breast Cancer (VIKTORIA-2)
PHASE3 Duarte, California +4 sites NCT06757634
Recruiting
A Study to Learn About the Study Medicine Called PF-07248144 in Combination With Fulvestrant in People With HR-positive, HER2-negative Advanced or Metastatic Breast Cancer Who Progressed After a Prior Line of Treatment.
PHASE3 Chandler, Arizona +4 sites NCT07062965
Recruiting
Study of the Bria-IMT Regimen and CPI vs Physicians' Choice in Advanced Metastatic Breast Cancer.
PHASE3 Anaheim, California +4 sites NCT06072612
Recruiting
OP-1250 (Palazestrant) vs. Standard of Care for the Treatment of ER+/HER2- Advanced Breast Cancer
PHASE3 Fountain Valley, California +4 sites NCT06016738
Recruiting
Serial Circulating Tumor DNA (ctDNA) Monitoring During Adjuvant Capecitabine in Early Triple-negative Breast Cancer
PHASE2 Stanford, California NCT04768426
Recruiting
A Phase I/IIa Study of AZD8205 Given Alone or Combined, in Participants With Advanced/Metastatic Solid Malignancies
PHASE1 Duarte, California +4 sites NCT05123482
Recruiting
See all 273 Breast Cancer trials in California

Breast Cancer clinical trials in California: common questions

How many Breast Cancer clinical trials are recruiting in California?
TrialFinder currently lists 273 recruiting Breast Cancer clinical trials with study sites in California. Results are updated regularly from ClinicalTrials.gov, the official U.S. registry of clinical studies.
Where are Breast Cancer clinical trials located in California?
Study sites for the Breast Cancer trials listed on this page include Duarte, Burbank, Beverly Hills, Anaheim, San Diego, Fountain Valley. Each trial page lists every participating site with contact details, so you can find the location closest to you.
Do I need insurance to join a Breast Cancer clinical trial in California?
No. Study-related care is covered by the trial sponsor at no cost to participants, including the study treatment, required lab tests and study visits. Many Breast Cancer trials in California also compensate participants for time and travel. Health insurance is not required to search or enroll.
How do I qualify for a Breast Cancer clinical trial in California?
Each study sets its own criteria based on age, Breast Cancer diagnosis details, prior treatments, current medications and general health. The fastest way to find out is to contact a research site directly — most will pre-screen you by phone in 10 to 15 minutes at no charge. You can also create a free TrialFinder profile to be matched automatically.
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About Breast Cancer Trials

Breast cancer trials test new chemotherapy regimens, immunotherapy combinations, targeted therapies, and early-detection methods across all stages of breast cancer.

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