The city of Seattle, Washington, currently has 64 active clinical trials seeking participants for Breast Cancer research studies.
Adding an Immunotherapy Drug, MEDI4736 (Durvalumab), to the Usual Chemotherapy Treatment (Paclitaxel, Cyclophosphamide, and Doxorubicin) for Stage II-III Breast Cancer
Recruiting
This phase III trial compares the addition of an immunotherapy drug (durvalumab) to usual chemotherapy versus usual chemotherapy alone in treating patients with MammaPrint High 2 Risk (MP2) stage II-III hormone receptor positive, HER2 negative breast cancer. Immunotherapy with monoclonal antibodies, such as durvalumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. Chemotherapy drugs, such as paclitaxel, doxorubicin, and... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/22/2025
Locations: Swedish Medical Center-First Hill, Seattle, Washington
Conditions: Anatomic Stage II Breast Cancer AJCC v8, Anatomic Stage III Breast Cancer AJCC v8, HER2-Negative Breast Carcinoma, Hormone Receptor-Positive Breast Carcinoma
Targeted Therapy Directed by Genetic Testing in Treating Patients With Locally Advanced or Advanced Solid Tumors, The ComboMATCH Screening Trial
Recruiting
This ComboMATCH patient screening trial is the gateway to a coordinated set of clinical trials to study cancer treatment directed by genetic testing. Patients with solid tumors that have spread to nearby tissue or lymph nodes (locally advanced) or have spread to other places in the body (advanced) and have progressed on at least one line of standard systemic therapy or have no standard treatment that has been shown to prolong overall survival may be candidates for these trials. Genetic tests loo... Read More
Gender:
ALL
Ages:
All
Trial Updated:
08/22/2025
Locations: Swedish Medical Center-First Hill, Seattle, Washington
Conditions: Advanced Malignant Solid Neoplasm, Locally Advanced Malignant Solid Neoplasm, Metastatic Malignant Solid Neoplasm, Unresectable Malignant Solid Neoplasm, Recurrent Endometrial Carcinoma, Recurrent Fallopian Tube Carcinoma, Recurrent Ovarian Carcinoma, Recurrent Primary Peritoneal Carcinoma, Anatomic Stage III Breast Cancer AJCC v8, Anatomic Stage IV Breast Cancer AJCC v8, Metastatic HER2-Negative Breast Carcinoma, Unresectable HER2-Negative Breast Carcinoma, Malignant Female Reproductive System Neoplasm, Recurrent Malignant Female Reproductive System Neoplasm, Recurrent Malignant Solid Neoplasm
A Study Comparing the Efficacy and Safety of Zanidatamab to Trastuzumab, Each in Combination With Physician's Choice Chemotherapy, for the Treatment of Participants With Metastatic HER2-positive Breast Cancer
Recruiting
The efficacy and safety of zanidatamab in combination with physician's choice of chemotherapy compared with trastuzumab in combination with physician's choice of chemotherapy will be evaluated for the treatment of participants with metastatic HER2-positive breast cancer who have progressed on, or are intolerant to, previous T-DXd treatment.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/22/2025
Locations: Fred Hutchinson Cancer Center, Seattle, Washington
Conditions: Metastatic HER2-positive Breast Cancer
Study to Assess Clinical Activity of Zelenectide Pevedotin in Participants With Advanced Breast Cancer
Recruiting
This is a global, multicenter, open-label study that aims to assess the efficacy and safety of zelenectide pevedotin in participants with NECTIN4-amplified recurrent, unresectable, or metastatic breast cancer who have received prior therapy (see inclusion criteria below). The study will comprise of 2 cohorts. Cohort A will include participants with hormone receptor positive/ human epidermal growth factor receptor 2 negative \[HR+/HER2-\] breast cancer, whereas Cohort B will include participants... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/20/2025
Locations: Fred Hutchinson Cancer Center, Seattle, Washington
Conditions: Breast Cancer
Study of Oral MRT-2359 in Selected Cancer Patients
Recruiting
This Phase 1/2, open-label, multicenter study is conducted in patients with previously treated selected solid tumors, including non-small cell lung cancer (NSCLC), small cell lung cancer (SCLC), high-grade neuroendocrine cancer of any primary site, diffuse large B-cell lymphoma (DLBCL), and tumors with L-MYC or N-MYC amplification. Patients receive escalating doses of a GSPT1 molecular glue degrader MRT-2359 to determine safety, tolerability, maximum tolerated dose (MTD) and/or recommended Phase... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/19/2025
Locations: Fred Hutchinson Cancer Center, Seattle, Washington
Conditions: NSCLC, SCLC, DLBCL, NSCLC With High or Low L-MYC or N-MYC Expression, High Grade Neuroendocrine Cancer, L-MYC and N-MYC Amplified Solid Tumors, HR-positive, HER2-negative Breast Cancer, Prostate Cancer
A Study to Evaluate the Efficacy and Safety of Giredestrant in Combination With Phesgo (Pertuzumab, Trastuzumab, and Hyaluronidase-zzxf) Versus Phesgo in Participants With Locally Advanced or Metastatic Breast Cancer (heredERA Breast Cancer)
Recruiting
This Phase III, randomized, two-arm, open-label, multicenter study will evaluate the efficacy and safety of giredestrant plus Phesgo compared with Phesgo after induction therapy with Phesgo plus taxane in participants with human epidermal growth factor receptor 2 (HER2)-positive, estrogen receptor (ER)-positive advanced breast cancer (metastatic or locally advanced disease not amenable to curative treatment) who have not previously received a systemic non-hormonal anti-cancer therapy in the adva... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/19/2025
Locations: Swedish Cancer Institute, Seattle, Washington
Conditions: Locally Advanced or Metastatic Breast Cancer
BGB-21447 (Bcl-2 Inhibitor) Combinations for Adults With Hormone-Receptor Positive (HR+)/Human Epidermal Growth Factor Receptor 2 Negative (HER2-) Metastatic Breast Cancer
Recruiting
The purpose of this study is to assess the safety and tolerability of BGB-21447 (a B-cell leukemia/lymphoma 2 inhibitor, Bcl-2i) in combination with fulvestrant, with or without BGB-43395 (cyclin-dependent kinase 4 inhibitor, CDK4i), in adults with HR+/HER2- metastatic breast cancer.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/19/2025
Locations: Fred Hutchinson Cancer Research Center, Seattle, Washington
Conditions: Hormone-receptor-positive Breast Cancer, HER2-negative Breast Cancer, Metastatic Breast Cancer
Rinatabart Sesutecan (Rina-S, PRO1184, GEN1184) for Advanced Solid Tumors (GCT1184-01/ PRO1184-001)
Recruiting
This study will test the safety, including side effects, and determine the characteristics of a drug called Rina-S in participants with solid tumors. Participants will have solid tumor cancer that has spread through the body (metastatic) or cannot be removed with surgery (unresectable).
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/15/2025
Locations: Swedish Cancer Institute, Seattle, Washington
Conditions: Primary Peritoneal Carcinoma, Fallopian Tube Cancer, Endometrial Cancer, Non-small Cell Lung Cancer, Mesothelioma, Triple Negative Breast Cancer, High Grade Epithelial Ovarian Cancer, Breast Adenocarcinoma, Hormone Receptor-positive/Her2 Negative Breast Cancer, Platinum Sensitive Ovarian Cancer (PSOC), High Grade Serous Ovarian Cancer, Epidermal Growth Factor Receptor (EGFR)-Mutated Non-Small Cell Lung Cancer (NSCLC), Platinum-resistant Ovarian Cancer (PROC), Primary Refractory Ovarian Cancer, Uterine Cancer
Testing the Role of FDG-PET/CT to Predict Response to Therapy Prior to Surgery for HER2-positive Breast Cancer, The DIRECT Trial
Recruiting
This phase II trial tests how well an imaging procedure called fludeoxyglucose F-18 (FDG) positron emission tomography/computed tomography (PET/CT) works in predicting response to standard of care chemotherapy prior to surgery in patients with HER2-positive stage IIa-IIIc breast cancer. FDG is a radioactive tracer that is given in a vein before PET/CT imaging and helps to identify areas of active cancer. PET and CT are imaging techniques that make detailed, computerized pictures of areas inside... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/15/2025
Locations: FHCC South Lake Union, Seattle, Washington +2 locations
Conditions: Anatomic Stage II Breast Cancer AJCC v8, Anatomic Stage III Breast Cancer AJCC v8, HER2-Positive Breast Carcinoma, Invasive Breast Carcinoma
MammaPrint, BluePrint, and Full-genome Data Linked With Clinical Data to Evaluate New Gene EXpression Profiles
Recruiting
The FLEX Registry will be implemented to operate as a large-scale, population based, prospective registry. All patients with stage I to III breast cancer who receive MammaPrint® and BluePrint testing on a primary breast tumor are eligible for entry into the FLEX Registry, which is intended to enable additional study arms at low incremental effort and cost. FLEX Registry will utilize an adaptive design, where additional targeted substudies and arms can be added after the initial study is opened.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/15/2025
Locations: Swedish Cancer Institute, Seattle, Washington +1 locations
Conditions: Breast Cancer
Beamion BCGC-1: A Study to Find a Suitable Dose of Zongertinib Used Alone and in Combination With Other Treatments to Test Whether it Helps People With Different Types of HER2+ Cancer That Has Spread
Recruiting
This study is open to adults aged 18 years and older with different types of HER2+ cancer that has spread and cannot be removed by surgery. People can take part in this study if their tumours show HER2 aberrations and previous treatment was not successful. The purpose of this study is to find a suitable dose of zongertinib that people with different types of HER2+ cancer that has spread can tolerate best when taken together with trastuzumab deruxtecan (T-DXd), with trastuzumab emtansine (T-DM1),... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
08/14/2025
Locations: Fred Hutchinson Cancer Research Center, Seattle, Washington
Conditions: Metastatic Breast Cancer, Metastatic Gastric Adenocarcinoma, Gastroesophageal Junction Adenocarcinoma, Esophageal Adenocarcinoma
Remotely Delivered, Community-Aligned Weight Loss Interventions Among Breast Cancer Survivors, ¡Vida! Trial
Recruiting
This clinical trial evaluates remotely delivered, community-aligned weight loss interventions in Latina breast cancer survivors. Breast cancer is the second leading cause of cancer death among women in the US. There are population differences in breast cancer mortality, based on specific risk factors, including obesity. Cancer is the leading cause of death among Latinos, and among Latinas, breast cancer is the leading cause of cancer death. An estimated 80% of Latinas in the United States have o... Read More
Gender:
FEMALE
Ages:
18 years and above
Trial Updated:
08/14/2025
Locations: Fred Hutch/University of Washington Cancer Consortium, Seattle, Washington
Conditions: Anatomic Stage I Breast Cancer AJCC v8, Anatomic Stage II Breast Cancer AJCC v8, Anatomic Stage III Breast Cancer AJCC v8