About Pricing FAQs Providers Trials Blog

Login Get started

Finding studies

Your health journey, clearly organized.

Questions? feedback@clareohealth.com

Product

How it works
Pricing
For Providers
Trials

Company

About
Blog
FAQ

Legal

Privacy Policy
Terms of Service

© 2026 Clareo Health. All rights reserved.

Clareo Health | Breast Cancer Clinical Trials in California | 1,850 Studies

Clinical Trials Breast CancerCalifornia

Breast Cancer Clinical Trials in California

Find 1,850 clinical trials for breast cancer near California. Connect with research centers in your area.

All Breast Cancer trials nationwide All trials in California

Order

Status

RecruitingNot yet recruitingActive, not recruitingEnrolling by invitationCompletedTerminated

Phase

Early phase 1Phase 1Phase 1–2Phase 2Phase 2–3Phase 3Phase 4No phase

Who can join

Healthy volunteers too

Showing 1-20 of 1,850 trials

Active not recruitingVaccine Therapy and Pembrolizumab in Treating Patients With Solid Tumors That Have Failed Prior TherapyThis phase I trial studies the side effects of vaccine therapy and pembrolizumab in treating patients with solid tumors that have spread to other places in the body and usually…NCT02432963·Duarte, California TerminatedClinical Trial of Gemcitabine and Oxaliplatin in Recurrent or Metastatic Breast CancerThe purpose of this study is to find out if the combination of gemcitabine and oxaliplatin chemotherapy will be effective in reducing or eliminating the tumor(s) in patients with…NCT00159458·Los Angeles, California and 1 other UnknownPredicting Chronic Pain Following Breast SurgeryBreast surgery, which includes mastectomy, breast reconstructive surgery, or lumpectomies with sentinel node biopsies, may lead to the development of chronic pain and long-term…NCT04967352·La Jolla, California

Breast Cancer Trials in Other Cities

New York Los Angeles Chicago Houston Phoenix Philadelphia

Data from ClinicalTrials.govTerms

TerminatedA Study With NKT3447 for Adults With Advanced/Metastatic Solid TumorsThe goal of the Dose Escalation phase of the study is to evaluate the safety, tolerability, and pharmacokinetics (PK) to determine the maximum tolerated dose (MTD) and/or…NCT06264921·San Francisco, California and 7 others

CompletedDocetaxel in Treating Patients With Solid TumorsRATIONALE: Drugs used in chemotherapy use different ways to stop tumor cells from dividing so they stop growing or die.NCT00003565·Anniston, Alabama and 73 others

CompletedImmunohistochemical & Immunoblot Analysis of NIS (Na+/I-Symporter) in Archival & Frozen Tissue SampleThe goal of this study is to study NIS expression in benign and malignant breast and thyroid samples using archival formalin-fixed paraffin-embedded tissue sections.NCT00568438·Stanford, California

CompletedA Study of Multiple Immunotherapy-Based Treatment Combinations in Hormone Receptor (HR)-Positive Human Epidermal Growth Factor Receptor 2 (HER2)-Negative Breast CancerThis study is designed to evaluate the efficacy, safety, and pharmacokinetics of several immunotherapy-based combination treatments in participants with inoperable locally…NCT03280563·Birmingham, Alabama and 21 others

Active not recruitingIntraoperative Radiation Therapy in Treating Patients With Breast Cancer Undergoing Breast-Conserving SurgeryThis phase IV trial studies the side effects of intraoperative radiation therapy and how well it works in treating patients with breast cancer undergoing breast-conserving surgery.NCT01570998·Berkeley, California and 24 others

CompletedBioequivalence of 2 Formulations of TKI258 in Patients With Advanced Solid TumorsThis is a multi-center, open-label, two way crossover study designed to test the bioequivalence of 2 different oral forms of TKI258, FMI capsule and FMI tablet in patients with…NCT01421004·Duarte, California and 13 others

RecruitingBiospecimen and Medical Data Collection and Tumor Biopsy in Creating Research Tissue Registry in Patients With Inflammatory or Invasive Breast CancerThis trial studies the biospecimen and medical data collection in creating a research tissue registry in patients with inflammatory or invasive breast cancer.NCT00477100·Gilbert, Arizona and 9 others

Active not recruitingHypofractionated vs. Conventional Regional Nodal Radiation Therapy for Patients With Invasive Breast CancerTo compare how often cancer recurs (comes back) after 3 weeks of radiation compared to 5 weeks of radiation in patients who receive radiation therapy delivered to the lymph nodes…NCT02912312·Gilbert, Arizona and 11 others

CompletedCardiac Aggressive Risk Mitigation in Thoracic Radiotherapy (CARMA) TrialThe purpose of this study is to examine adherence to cardio-oncology consultation.NCT05403736·Los Angeles, California

TerminatedPhase 2 Study of Lovastatin as Breast Cancer ChemopreventionThe study evaluates if a 6-month course of oral lovastatin at 80 mg/day would decrease abnormal breast duct cytology in women with a high inherited breast cancer risk.NCT00285857·Stanford, California

Active not recruiting[177Lu]Lu-NeoB in Combination With Ribociclib and Fulvestrant in Participants With ER+, HER2- and GRPR+ Advanced Breast CancerThe purpose of this trial is to estimate the recommended dose (RD) of \[177Lu\]Lu-NeoB in combination with ribociclib and fulvestrant in participants with estrogen receptor (ER)…NCT05870579·Los Angeles, California and 12 others

TerminatedComparing Whole Brain Radiotherapy Using a Technique That Avoids the Hippocampus to Stereotactic Radiosurgery in Patients With Cancer That Has Spread to the Brain and Come Back in Other Areas of the Brain After Earlier Stereotactic RadiosurgeryThis phase III trial compares the effect of adding whole brain radiotherapy with hippocampal avoidance and memantine versus stereotactic radiosurgery alone in treating patients…NCT04588246·Tucson, Arizona and 80 others

CompletedTriptorelin With Either Exemestane or Tamoxifen in Treating Premenopausal Women With Hormone-Responsive Breast CancerRATIONALE: Estrogen can stimulate the growth of breast cancer cells.NCT00066703·Burbank, California and 227 others

CompletedPalbociclib in Real World PracticeThis Non-Interventional Study will describe and analyze the clinical use of palbociclib in routine clinical practice in the treatment of advanced breast cancer.NCT03280303·Alabaster, Alabama and 304 others

WithdrawnImproving Survivorship Among Minority Cancer DyadsThis proposed intervention centers on improving survivorship outcomes among African American and Latinx cancer survivor and caregiver dyads.NCT04685551·Los Angeles, California

CompletedAngiogenesis in Early Breast Cancer for Prognosis PredictionThis study will investigate the association of angiogenesis in breast cancer measured by magnetic resonance imaging and biomarkers with long-term prognosis of patients.NCT00599105·Irvine, California

RecruitingA Dose Finding Phase 1 of Sarilumab Plus Capecitabine in HER2/Neu-Negative Metastatic Breast Cancer and a Single-arm, Historically-controlled Phase 2 Study of Sarilumab Plus Capecitabine in Stage I-III Triple Negative Breast Cancer With High-Risk Residual Disease (EMPOWER)This study looks to advance a novel and potent strategy to eliminate minimal residual disease (MRD) in triple negative breast cancer (TNBC) present even after multimodal…NCT04333706·Los Angeles, California and 2 others

Page 1 of 93Next

Other Conditions in California

Lung Cancer Prostate Cancer Colorectal Cancer Melanoma Leukemia Lymphoma