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Breast Cancer clinical trials in Mountain View, CA
26 studies for Breast Cancer are looking for participants at sites in and around Mountain View (within about 30 miles). Open a study to see who can join and how to contact the study team.
Recruiting for a study here? Feature it at the top of this page — $99 for 30 days →
Phase 3 Study of RLY-2608 + Fulvestrant vs Capivasertib + Fulvestrant as Treatment for Locally Advanced or Metastatic PIK3CA-mutant HR+/HER2- Breast Cancer
RecruitingPhase 3
- Stanford Women's Cancer Center, Palo Alto · 5 mi away
A Study of PHST001 in Advanced Solid Tumors
RecruitingPhase 1
- Stanford University School of Medicine, Palo Alto · 5 mi away
Phase IIIb Study of Ribociclib + ET in Early Breast Cancer
RecruitingPhase 3
- El Camino Hospital, Mountain View
- Palo Alto Medical Foundation, Mountain View
A Study of Patritumab Deruxtecan (HER3-DXd) in Combination With Trastuzumab Deruxtecan (T-DXd) in Participants With HR-Positive, HER2-Low or HER2-Ultralow Unresectable or Metastatic Breast Cancer
RecruitingPhase 1/2
- Stanford Medicine Cancer Center, Stanford · 5 mi away
A Clinical Study of Sacituzumab Tirumotecan (Sac-TMT, MK-2870) in People With Breast Cancer (MK-2870-032)
RecruitingPhase 3
- El Camino Hospital Cancer Center ( Site 0096), Mountain View
A Study of LY4257496 in Participants With Cancer (OMNIRAY)
RecruitingPhase 1
- Stanford University Medical Center, Stanford · 5 mi away
A Study of LY4337713 in Participants With FAP-Positive Solid Tumors
RecruitingPhase 1
- Stanford University Medical Center, Stanford · 5 mi away
A Study of Tersolisib (LY4064809/STX-478) With Other Anti-Cancer Treatments in Participants With Advanced Breast Cancer With a Genetic Change (PIK3CA)
RecruitingPhase 3
- Stanford Cancer Center, Palo Alto · 5 mi away
ROSETTA Breast-01: The Effects and Safety of Pumitamig in Patients With Triple-Negative Breast Cancer
RecruitingPhase 3
- Stanford University School of Medicine - Stanford Cancer Institute (SCI) - Stanford Women's Cancer Center, Palo Alto · 5 mi away
A Study of Elacestrant Versus Standard Endocrine Therapy in Women and Men With ER+,HER2-, Early Breast Cancer With High Risk of Recurrence
RecruitingPhase 3
- Stanford Women's Cancer Center, Palo Alto · 5 mi away
A Study of LOXO-783 in Patients With Breast Cancer/Other Solid Tumors
RecruitingPhase 1
- Stanford University Hospital, Stanford · 5 mi away
A Phase IIIb Study to Evaluate Camizestrant Plus Ribociclib in ER-positive, HER2-negative Advanced Breast Cancer
RecruitingPhase 3
- Research Site, Palo Alto · 5 mi away
A Phase II Study Evaluating the Efficacy and Safety of Inavolisib Plus Ribociclib Plus Fulvestrant Versus Placebo Plus Ribociclib Plus Fulvestrant in Participants With Advanced Breast Cancer
RecruitingPhase 2
- Stanford Cancer Institute, Palo Alto · 5 mi away
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
RecruitingPhase 3
- Palo Alto Medical Foundation Research Center, Palo Alto · 5 mi away
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
RecruitingPhase 3
- Palo Alto Medical Foundation-Camino Division, Mountain View
- Palo Alto Medical Foundation-Gynecologic Oncology, Mountain View
- Palo Alto Medical Foundation Health Care, Palo Alto · 5 mi away
- and 1 more
Serial Circulating Tumor DNA (ctDNA) Monitoring During Adjuvant Capecitabine in Early Triple-negative Breast Cancer
RecruitingPhase 2
- Stanford University, Stanford · 5 mi away
A Study of Izalontamab Brengitecan Versus Chemotherapy in Participants With Previously Untreated, Locally Advanced, Recurrent Inoperable, or Metastatic Triple-negative Breast Cancer Ineligible for Anti-PD(L)1 Drugs (IZABRIGHT-Breast01)
RecruitingPhase 2/3
- Local Institution - 0358, Stanford · 5 mi away
Phase 3 Study to Evaluate the Efficacy and Safety of HER2/Neu Peptide GLSI-100 (GP2 + GM-CSF) in HER2/Neu Positive Subjects
RecruitingPhase 3
- Stanford Medicine Cancer Center - Stanford Women's Cancer Center, Palo Alto · 5 mi away
Phase I Study of [177Lu]Lu-NNS309 in Patients With Pancreatic, Lung, Breast and Colorectal Cancers
RecruitingPhase 1
- Stanford University Medical Center, Palo Alto · 5 mi away
Magnetic Resonance Imaging of Breast Cancer
RecruitingHealthy volunteers welcome
- Stanford University School of Medicine, Stanford · 5 mi away
Genetic & Pathological Studies of BRCA1/BRCA2: Associated Tumors & Blood Samples
RecruitingObservational study
- Stanford University School of Medicine, Stanford · 5 mi away
De-Escalation of Breast Radiation Trial for Hormone Sensitive, HER-2 Negative, Oncotype Recurrence Score Less Than or Equal to 18 Breast Cancer (DEBRA)
RecruitingPhase 3
- Palo Alto Medical Foundation-Camino Division, Mountain View
- Palo Alto Medical Foundation Health Care, Palo Alto · 5 mi away
- Stanford Cancer Institute Palo Alto, Palo Alto · 5 mi away
Gene Modified Immune Cells After Conditioning Regimen for the Treatment of Stage IIIC or IV Melanoma or Metastatic Solid Tumors
RecruitingPhase 1
- Stanford Cancer Institute, Stanford · 5 mi away
Surgical Excision vs Neoadjuvant Radiotherapy+Delayed Surgical Excision of Ductal Carcinoma
Recruiting
- Stanford University, Stanford · 5 mi away
EXActDNA-003 / NSABP B-64: Study of Molecular Residual Disease Detection in Breast Cancer (MRD)
RecruitingObservational study
- Stanford Cancer Institute, Palo Alto · 5 mi away
SYNERGY-AI: Artificial Intelligence Based Precision Oncology Clinical Trial Matching and Registry
RecruitingObservational study
- Massive Bio SYNERGY-AI site, Stanford · 5 mi away
About Breast Cancer
Breast cancer is a cancer that starts in the breast tissue, when cells change and grow out of control. These extra cells can form a mass called a tumor.
More about Breast Cancer on MedlinePlus
Breast Cancer trials in other cities
- New York City, NY136 studies
- Houston, TX126 studies
- Boston, MA112 studies
- Nashville, TN81 studies
- Los Angeles, CA73 studies
- Edison, NJ68 studies
- St. Louis, MO64 studies
- Queens, NY64 studies
- Durham, NC64 studies
- Chicago, IL59 studies
- Philadelphia, PA56 studies
- Dallas, TX55 studies
Other studies in Mountain View
- Cancer (all types)40 studies
- Metastatic Cancer25 studies
- Non-Small Cell Lung Cancer21 studies
- Acute Myeloid Leukemia19 studies
- Ovarian Cancer19 studies
- Autism Spectrum Disorder17 studies
- Lung Cancer17 studies
- Prostate Cancer15 studies
- Heart Failure15 studies
- Autism13 studies
- Acute Lymphoblastic Leukemia13 studies
- Colorectal Cancer13 studies
From ClinicalTrials.gov, data retrieved Oct 6, 2026. Each study sets its own eligibility; the study team decides who can join.