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 Seattle | 547 Studies

Clinical Trials Breast CancerSeattle

Breast Cancer Clinical Trials in Seattle

Find 547 clinical trials for breast cancer near Seattle, Washington. Connect with research centers in your area.

All Breast Cancer trials nationwide All trials in Seattle

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 121-140 of 547 trials

CompletedStudy Comparing Lapatinib (GW572016) And Letrozole Versus Letrozole In Subjects With Advanced Or Metastatic Breast CancerThis study evaluated and compared the efficacy and tolerability of lapatinib and letrozole, with letrozole and placebo in post-menopausal women with hormone receptor positive (ER…NCT00073528·Tucson, Arizona and 277 others

Breast Cancer Trials in Other Cities

New York Los Angeles Chicago Houston Phoenix Philadelphia

Data from ClinicalTrials.govTerms

CompletedCombination Chemotherapy in Treating Women With Breast CancerRATIONALE: Drugs used in chemotherapy use different ways to stop tumor cells from dividing so they stop growing or die. Combining more than one drug may kill more tumor cells.NCT00003519·Birmingham, Alabama and 133 others

Active not recruitingT-DM1 and Tucatinib Compared With T-DM1 Alone in Preventing Relapses in People With High Risk HER2-Positive Breast Cancer, the CompassHER2 RD TrialThis phase III trial compares the effect of usual treatment with trastuzumab emtansine (T-DM1) alone vs. T-DM1 in combination with tucatinib.NCT04457596·Birmingham, Alabama and 1175 others

Active not recruitingStudy to Determine the Safety, Tolerability, Pharmacokinetics and Recommended Phase 2 Dose (RP2D) of Livmoniplimab (ABBV-151) as a Single Agent and in Combination With Budigalimab (ABBV-181) in Participants With Locally Advanced or Metastatic Solid TumorsThe study will determine the recommended Phase 2 dose (RP2D) of livmoniplimab (ABBV-151) administered as monotherapy and in combination with budigalimab (ABBV-181) as well as to…NCT03821935·Springdale, Arkansas and 63 others

CompletedCombination Chemotherapy and Peripheral Blood Stem Cell Transplant Followed By Aldesleukin and Sargramostim in Treating Patients With Inflammatory Stage IIIB or Metastatic Stage IV Breast CancerThis phase II trial studies how well giving combination chemotherapy and peripheral blood stem cell transplant followed by aldesleukin and sargramostim works in treating patients…NCT00003199·Seattle, Washington

TerminatedBasket Study of Neratinib in Participants With Solid Tumors Harboring Somatic HER2 or EGFR Exon 18 MutationsThis is an open-label, multicenter, multinational, Phase 2 basket study exploring the efficacy and safety of neratinib as monotherapy or in combination with other therapies in…NCT01953926·Birmingham, Alabama and 59 others

UnknownDCE-MRI and DWI for Detection and Diagnosis of Breast CancerA type of magnetic resonance imaging called diffusion weighted imaging (DWI) will be tested to define cancerous from non-cancerous lesions in the breast.NCT02022579·Seattle, Washington

CompletedFLT PET in Measuring Treatment Response in Patients With Newly Diagnosed Estrogen Receptor-Positive, HER2-Negative Stage I-III Breast CancerThis clinical trial studies fluorine F 18 fluorothymidine (FLT) positron emission tomography (PET) in measuring treatment response in patients with newly diagnosed estrogen…NCT01928186·Seattle, Washington

TerminatedA Study Of PF-06664178 In Patients With Advanced Solid TumorsTo assess the safety and tolerability at increasing dose levels of PF-06664178 in patients with advanced solid tumors in order to determine the maximum tolerated dose and select…NCT02122146·Los Angeles, California and 9 others

CompletedYoga Study in Breast Cancer PatientsThis purpose of this study is to test whether a 6-month yoga program improves quality of life and reduces fatigue and weight gain in breast cancer survivors.NCT00476203·Seattle, Washington

RecruitingS1501 Dual Observational and Randomized Cohort Study of Patients With Metastatic HER-2+ Breast Cancer at Risk of Cardiac ToxicityThis trial has two cohorts of patients with human epidermal growth factor receptor (HER)-2-positive breast cancer that has spread to other places in the body.NCT03418961·Anchorage, Alaska and 589 others

Active not recruitingTargeted Therapy Directed by Genetic Testing in Treating Patients With Advanced Refractory Solid Tumors, Lymphomas, or Multiple Myeloma (The MATCH Screening Trial)This phase II MATCH screening and multi-sub-trial studies how well treatment that is directed by genetic testing works in patients with solid tumors, lymphomas, or multiple…NCT02465060·Birmingham, Alabama and 1409 others

CompletedSurvivorship Care in Reducing Symptoms in Young Adult Cancer SurvivorsThis randomized clinical trial studies survivorship care in reducing symptoms in young adult cancer survivors.NCT02192333·Los Angeles, California and 5 others

RecruitingMammaPrint, BluePrint, and Full-genome Data Linked With Clinical Data to Evaluate New Gene EXpression ProfilesThe FLEX Registry will be implemented to operate as a large-scale, population based, prospective registry.NCT03053193·Birmingham, Alabama and 133 others

CompletedStudy of Glembatumumab Vedotin (CDX-011) in Patients With Metastatic, gpNMB Over-Expressing, Triple Negative Breast CancerThe main purpose of this study is to see whether CDX-011 (glembatumumab vedotin, an antibody-drug conjugate) is effective in treating patients who have advanced Triple-Negative…NCT01997333·Birmingham, Alabama and 139 others

CompletedA Phase 1/2 Study of CYT-0851 in B-Cell Malignancies and Advanced Solid TumorsThis clinical trial is an interventional, active-treatment, open-label, multi-center, Phase 1/2 study.NCT03997968·San Francisco, California and 15 others

CompletedA Phase III Randomized Trial of Metformin vs Placebo in Early Stage Breast CancerThis study is looking at whether Metformin, an agent that is commonly used to treat diabetes, can decrease or affect the ability of breast cancer cells to grow and whether…NCT01101438·Anchorage, Alaska and 343 others

Active not recruitingUsing FDG-PET/CT to Assess Response of Bone-Dominant Metastatic Breast Cancer, FEATURE StudyThis phase II trial studies how well FDG-PET/CT works in assessing the response of patients with breast cancer that has spread to the bones or mostly to the bones (bone-dominant…NCT04316117·Birmingham, Alabama and 103 others

WithdrawnS0307A, Long-Term Bone Quality in Women With Breast Cancer Enrolled on Clinical Trial SWOG-S0307RATIONALE: Gathering information over time from imaging and laboratory tests of women receiving bisphosphonates for breast cancer may help doctors learn more about long-term bone…NCT00873808·Seattle, Washington

Active not recruitingA Study of LY3484356 in Participants With Advanced or Metastatic Breast Cancer or Endometrial CancerThe reason for this study is to see if the study drug LY3484356 alone or in combination with other anticancer therapies is safe and effective in participants with advanced or…NCT04188548·Gilbert, Arizona and 73 others

PreviousPage 7 of 28Next

Other Conditions in Seattle

Lung Cancer Prostate Cancer Colorectal Cancer Melanoma Leukemia Lymphoma