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Clinical Research Directory

Browse clinical research sites, groups, and studies.

222 clinical studies listed.

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Metastatic Breast Cancer

Tundra lists 222 Metastatic Breast Cancer clinical trials. Each listing includes eligibility criteria, study locations, and direct links to research sites in the Tundra directory.

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RECRUITING

NCT05894239

A Study to Evaluate the Efficacy and Safety of Inavolisib in Combination With Phesgo Versus Placebo in Combination With Phesgo in Participants With PIK3CA-Mutated HER2-Positive Locally Advanced or Metastatic Breast Cancer

This study will evaluate the efficacy and safety of inavolisib in combination with Phesgo (pertuzumab, trastuzumab, and rHuPH20 injection for subcutaneous use) compared with placebo in combination with Phesgo, as maintenance therapy, after induction therapy in participants with previously untreated HER2-positive advanced breast cancer (ABC).

Gender: All

Ages: 18 Years - Any

Updated: 2026-05-29

47 states

Metastatic Breast Cancer
RECRUITING

NCT06533332

A Phase 1 Trial of ERX-315 in Participants With Advanced Solid Tumors

This is a Phase 1 study to assess the safety of ERX-315 in patients with advanced solid tumors that have failed approved systemic therapies.

Gender: All

Ages: 18 Years - Any

Updated: 2026-05-29

2 states

Advanced Solid Tumor
Metastatic Breast Cancer
Metastatic Ovarian Cancer
+3
RECRUITING

NCT06417801

Minimally Interventional Study on Prevalence of Emerging ESR1 Mutations in Liquid Biopsy in Three Cohorts of Patients With Breast Cancer in Comparison With Patient's Baseline ESR1 Mutation Status as Defined by Tissue Profiling.

Minimally interventional study on prevalence of emerging ESR1 mutations in liquid biopsy in three cohorts of patients with breast cancer (with and without prior therapies in metastatic setting, and during first-line aromatase inhibitor plus CDK4/6 inhibitor therapy) in comparison with patient's baseline ESR1 mutation status as defined by tissue profiling.

Gender: All

Ages: 18 Years - 100 Years

Updated: 2026-05-29

2 states

Metastatic Breast Cancer
RECRUITING

NCT06678269

A Study of Abemaciclib and Radiation Therapy in People With Metastatic Breast Cancer

The purpose of this study is to test different doses of abemaciclib to find the best dose in participants while receiving hormone therapy and radiation therapy.

Gender: All

Ages: 18 Years - Any

Updated: 2026-05-28

2 states

Metastatic Breast Cancer
Stage IV Breast Cancer
Breast Cancer
+5
RECRUITING

NCT06904625

Comparison of Different Methods of CAPTure of Circulating Tumour Cells (CTC) in Patients With Metastatic Breast or Prostate Cancer

This trial is a pilot, prospective, single-center study conducted in a population of patients with metastatic breast cancer (whatever the immunohistochemical subtype) or metastatic prostate cancer. The aim of this exploratory study is to compare the sensitivity of three different techniques (CellSearch®, Parsortix® and SmartCatch®) in detecting circulating tumor cells (CTCs). After the patient's agreement, and before starting anti-tumor treatment, a blood sample will be taken using the 3 different CTC detection techniques. Each patient will participate in the study for one day. A total of 54 evaluable patients (36 patients with metastatic breast cancer and 18 patients with metastatic prostate cancer) will be included in this interventional study.

Gender: All

Ages: 18 Years - Any

Updated: 2026-05-27

Metastatic Breast Cancer
Metastatic Prostate Cancer
COMPLETED

NCT05955833

89Zr-DFO*-Trastuzumab PET in Patients With Gastric or Breast Cancer - a Pilot Study

The goal of this clinical trial is to test a new PET tracer in patients with HER2-positive breast or gastric cancer. This tracer is made of radioactively labeled trastuzumab, and can show where HER2 is present in the body using a PET-scan. For this research, the investigators make PET-scans in people with HER2-positive, metastasized breast- or gastric cancer. The investigators will investigate if the new HER2-tracer correctly shows all tumor lesions. In the future, this method may be useful to help predict who will benefit from certain HER2-directed therapies. Participants will be injected with the radioactive tracer once. After injection, participants will undergo 3 PET-scans. Each PET-scan will take a maximum of 60 minutes. The PET-scans are on separate days within a week after injection of the tracer (e.g. 1 day, 2 days and 4 days after injection). Furthermore, the investigators will take 7 blood samples (5 mL each). Participants are not required to stay at the hospital. The first 3 participants will undergo an extra PET-scan 1 - 2 hours after injection. The amount of radioactivity injected will be 37 MBq (± 10%).

Gender: All

Ages: 18 Years - Any

Updated: 2026-05-27

1 state

Breast Cancer
Metastatic Breast Cancer
HER2-positive Breast Cancer
+3
RECRUITING

NCT07252726

Evaluating Dose Timing (Morning vs Evening) of Endocrine-based Therapies in Metastatic Breast and Prostate Cancers

The REaCT-CHRONO-MetBP Pilot study will compare morning and evening administration of endocrine-based therapy in metastatic breast and prostate cancers. Participants with metastatic breast or prostate cancer will be randomly placed in one of two groups: a morning group and an evening group. The group assignment will determine whether they take their endocrine therapy in the morning or the evening. The primary outcome of this pilot study is to evaluate the feasibility of study procedures in order to conduct a larger definitive trial in the future. The secondary outcomes include comparing quality of life, tolerability, and efficacy outcomes between the morning and evening groups for each of the two cancer cohorts (metastatic breast and prostate cancer).

Gender: All

Ages: 18 Years - Any

Updated: 2026-05-27

2 states

Metastatic Breast Cancer
Metastatic Prostate Cancer
RECRUITING

NCT06120283

BGB-43395 Alone or as Part of Combination Therapies in Participants With Breast Cancer and Other Advanced Solid Tumors

This is a dose escalation and dose expansion study to compare how well BGB-43395, a selective cyclin-dependent kinase 4 (CDK4) inhibitor, works as monotherapy or in combination with fulvestrant, letrozole, or elacestrant in participants with hormone receptor positive (HR+) and human epidermal growth factor 2 negative (HER2-) breast cancer (BC) and other advanced solid tumors. The main purpose of this study is to explore the recommended dosing for BGB-43395.

Gender: All

Ages: 18 Years - Any

Updated: 2026-05-27

25 states

Advanced Solid Tumor
Advanced Breast Cancer
Metastatic Breast Cancer
+6
RECRUITING

NCT03275311

Evolution of the Therapeutic Care in Metastatic Breast Cancer From 2008

The Epidemiological Strategy and Medical Economic (ESME) Breast cancer Database is a multicenter real life database using a retrospective data collection process across 18 French comprehensive cancer centers (FCCC) spread over 20 sites. This database compiles data from patient's electronic medical records (EMR).

Gender: All

Ages: 18 Years - Any

Updated: 2026-05-27

Metastatic Breast Cancer
NOT YET RECRUITING

NCT07608848

First-in-human Imaging Study of Theranostic Pair [68Ga]Ga-DOTA-STR-17126 and Low-dose [177Lu]Lu-DOTA-STR-17126 in Patients With Advanced or Metastatic Cancer

This is an open-label, first-in-human, exploratory Phase 0 study evaluating the safety and diagnostic imaging performance of the DOTA-STR-17126 theranostic pair in patients with advanced or metastatic breast or prostate cancer. The study investigates \[68Ga\]Ga-DOTA-STR-17126 for PET imaging and, in patients with positive GRPR uptake, a low dose of \[177Lu\]Lu-DOTA-STR-17126 for SPECT imaging and dosimetry. The primary objective is to assess safety and tolerability. Secondary objectives include evaluation of imaging quality, biodistribution, pharmacokinetics, and radiation dosimetry. Exploratory objectives assess correlations between GRPR expression in tumour tissue and imaging uptake. The study is conducted at a single centre in Australia, with 12 evaluable participants (up to 20 enrolled), and supports the development of a GRPR-targeted theranostic approach for personalised cancer management.

Gender: All

Ages: 18 Years - Any

Updated: 2026-05-27

Metastatic Breast Cancer
Metastatic Prostate Cancer
GRPR-Targeted Molecular Imaging
+5
RECRUITING

NCT06324357

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

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), with trastuzumab and capecitabine, with zanidatamab, or with mFOLFOX6 (with or without trastuzumab). Another purpose is to check whether zongertinib alone and in combination with other treatments can make tumours shrink. Zongertinib inhibits HER2. HER2 causes cancer cells to grow. In this study, participants receive treatment in cycles. Study participants are treated with zongertinib alone or in combination with other treatments. This study has 2 parts. In Part 1, participants in different groups receive increasing doses of zongertinib. In Part 2, participants are put into different groups by chance. Each group receives a different dose of zongertinib. Every participant has an equal chance of being in each group. During the study, the participants visit the study site regularly. In this study, researchers want to find the highest dose of zongertinib that participants can tolerate when taken together with other treatments. To find this out, researchers look at certain severe health problems that a number of participants have. The doctors regularly check the size of the tumour with imaging methods (CT/MRI) during the study. The doctors also regularly check participants' health and take note of any unwanted effects.

Gender: All

Ages: 18 Years - Any

Updated: 2026-05-26

17 states

Metastatic Breast Cancer
Metastatic Gastric Adenocarcinoma
Gastroesophageal Junction Adenocarcinoma
+2
NOT YET RECRUITING

NCT07599618

Evaluation of a Patient-Centered Decision-Making Support Tool for Older Adults With Advanced Breast Cancer and Their Care Partners

The purpose of this study is to determine the feasibility for a patient centered decision-making support tool for older adults with metastatic breast cancer and their care partners.

Gender: All

Ages: 65 Years - Any

Updated: 2026-05-26

1 state

Metastatic Breast Cancer
RECRUITING

NCT02422641

Prospective Evaluation Of High-Dose Systemic Methotrexate In Patients With Breast Cancer And Leptomeningeal Metastasis

This study is a prospective evaluation of systemic, intravenous high-dose methotrexate (HD-MTX, 8 g/m2) in patients with triple negative, HER2-positive, and hormone refractory breast cancer with leptomeningeal metastasis (LMD) with or without brain parenchymal involvement.

Gender: All

Ages: 18 Years - Any

Updated: 2026-05-26

3 states

Metastatic Breast Cancer
Leptomeningeal Disease
RECRUITING

NCT06551220

Efficacy of Trastuzumab Deruxtecan in Metastatic Breast Cancer With Different HER2 Expression Patterns

The purpose of this observational study is to learn about the HER2 heterogeneity and its impact on benefit from trastuzumab deruxtecan in metastatic breast cancer. The main question it aims to answer is: \- Does the heterogeneity of HER2 expression level and spatial distribution in different tissues affect the efficacy of trastuzumab deruxtecan in metastatic breast cancer?

Gender: FEMALE

Ages: 18 Years - 80 Years

Updated: 2026-05-22

9 states

Metastatic Breast Cancer
RECRUITING

NCT06246968

A Study of Pembrolizumab and Cryoablation in People With Breast Cancer

Participants will have a confirmed diagnosis of metastatic breast cancer and will receive pembrolizumab in combination with cryoablation OR pembrolizumab alone. Participants will be randomly assigned.

Gender: All

Ages: 18 Years - Any

Updated: 2026-05-20

2 states

Metastatic Breast Cancer
Breast Cancer
Breast Cancer Stage IV
+5
RECRUITING

NCT07340541

Evolutionary Clinical Trial for Novel Biomarker-Driven Therapies

This is a multicenter, multi-arm, biomarker-stratified trial designed to evaluate biomarker-directed therapies in patients with estrogen receptor-positive/hormone receptor-negative (ER+/HR-) and triple-negative (TN) metastatic breast cancer (MBC). The trial integrates both retrospective and prospective data collection, including archival tumor tissue, medical record abstraction, and prospective tumor and blood sampling prior to initiation of protocol directed treatment. Based on biomarker subtype, participants will receive standard of care therapy. Liquid biopsy will be collected on Cycle 2 Day 1, and then liquid biopsy, imaging and clinical data will be collected at each re-staging. Treatment will continue until discontinuation for progression, toxicity or at the discretion of the treating physician.

Gender: All

Ages: 18 Years - Any

Updated: 2026-05-20

2 states

Breast Cancer
Metastatic Breast Cancer
Triple Negative Breast Cancer
+2
RECRUITING

NCT07347600

A Study to Evaluate the Effectiveness and Safety of Inavolisib in Participants With Endocrine-resistant, PIK3CA-mutated, Hormone Receptor-positive, HER2-negative Locally Advanced or Metastatic Breast Cancer

The main purpose of this study is to evaluate the effectiveness of inavolisib based regimen in participants with endocrine-resistant, phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha gene (PIK3CA)-mutated, hormone receptor-positive (HR+), human epidermal growth factor receptor 2-negative (HER2-) locally advanced or metastatic breast cancer (LA/mBC), following on or after completing adjuvant endocrine therapy in routine clinical practice in China.

Gender: All

Ages: 18 Years - Any

Updated: 2026-05-18

3 states

Locally Advanced Breast Cancer
Metastatic Breast Cancer
RECRUITING

NCT06428396

Study of Belzutifan (MK-6482) Plus Fulvestrant for ER+/HER2- Metastatic Breast Cancer (MK-6482-029/LITESPARK-029)

The purpose of this study is to assess the efficacy and safety of belzutifan (MK-6482) plus fulvestrant compared to everolimus plus endocrine therapy (ET) (investigator's choice of fulvestrant or exemestane) in adults with estrogen receptor-positive, human epidermal growth factor receptor 2-negative (ER+/HER2-) unresectable metastatic breast cancer. There is no formal hypothesis testing in this study.

Gender: All

Ages: 18 Years - Any

Updated: 2026-05-18

25 states

Metastatic Breast Cancer
RECRUITING

NCT06855654

Promoting Resilience in Women With Breast Cancer (PRISM -MBC)

This pilot interventional study evaluates the change from baseline to post-intervention in resilience and other patient-reported outcomes for individuals with a recent diagnosis of metastatic breast cancer (MBC) participating in the Promoting Resilience in Women with Breast Cancer (PRISM) intervention, overall and stratified by race, and to evaluate the feasibility and acceptability of the PRISM intervention in the MBC population. Black women with MBC have shorter survival from the time of metastatic diagnosis to death, compared to White women with clinically similar disease, and may have more rapid declines in quality of life over time. Adverse social determinants of health may play a role in these outcome disparities, due to both social barriers in accessing care, and through direct stress-mediated biological effects on the host and tumor microenvironment. Interventions to reduce stress and optimize resilience during treatment of MBC may improve quality of life and even improve disease outcomes; however, feasibility of face-to-face intervention during intensive medical treatment is limited. Thus, this study aims to demonstrate the feasibility of a remotely delivered resilience intervention, PRISM, already proven effective in other cancer settings, for MBC patients, and to gather preliminary efficacy data for a future randomized trial.

Gender: All

Ages: 18 Years - Any

Updated: 2026-05-15

2 states

Breast Cancer
Metastatic Breast Cancer
RECRUITING

NCT07085767

Palazestrant in Combination With Ribociclib for the First-line Treatment of ER+/HER2- Advanced Breast Cancer

This phase 3 clinical trial compares the efficacy and safety of palazestrant with ribociclib to letrozole and ribociclib in women and men who have not received prior systemic anti-cancer treatment for advanced breast cancer.

Gender: All

Ages: 18 Years - Any

Updated: 2026-05-15

92 states

Breast Cancer
Locally Advanced Breast Cancer
Metastatic Breast Cancer
+2
RECRUITING

NCT06827236

A Clinical Study to Find the Optimal Dose of an Investigational Treatment Called BNT323 When Used in Combination With Another Investigational Treatment, BNT327, and to Test if That Combination Treatment is Safe and Beneficial for Patients With Advanced Breast Cancer

This is a Phase I/II, multi-site, open-label, two-part study designed to evaluate the efficacy, safety, optimized dose and contribution of components of BNT323 (also known as trastuzumab pamirtecan and DB-1303) in combination with BNT327 (also known as pumitamig and PM8002) in participants with hormone receptor-positive (HR+) or hormone receptor-negative (HR-), Human epidermal growth factor receptor (HER)2-positive, HER2-low (immunohistochemistry \[IHC\] 1+ or IHC 2+/in situ hybridization -), HER2-ultralow (IHC 0, with membrane staining) or HER2-null breast cancer (BC), or triple-negative breast cancer (TNBC).

Gender: All

Ages: 18 Years - Any

Updated: 2026-05-15

8 states

Locally Advanced Breast Cancer
Unresectable Breast Carcinoma
Metastatic Breast Cancer
RECRUITING

NCT07053085

A Study of Surgery and Radiotherapy in People With Breast Cancer

The researchers are doing this study to see if the combination of surgery, locoregional radiation therapy, SBRT (stereotactic body radiation therapy), and the usual approach is more effective in treating oligometastatic HER2-positive breast cancer than the usual approach alone. The researchers will also study the side effects of the study treatment.

Gender: All

Ages: 18 Years - Any

Updated: 2026-05-14

2 states

Metastatic Breast Cancer
HER2-positive Breast Cancer
RECRUITING

NCT06110793

A Study of Lenvatinib, Pembrolizumab, and Fulvestrant in People With Breast Cancer

The purpose of this study is to test whether the combination of lenvatinib, pembrolizumab, and fulvestrant is a safe and effective treatment that causes few or mild side effects in people with ER+/HER2- metastatic breast cancer.

Gender: All

Ages: 18 Years - Any

Updated: 2026-05-13

2 states

Metastatic Breast Cancer
RECRUITING

NCT06377852

The CDK4/6 Inhibitor Dosing Knowledge (CDK) Study

The purpose of this study is to generate evidence on an alternative dosing strategy for CDK4/6 inhibitors to help more patients with Metastatic Breast Cancer (MBC) (age ≥ 65 years) tolerate side effects and stay on treatment longer, to derive the most clinical benefit from these drugs. The primary objective of the CDK Study is to compare time to treatment discontinuation (TTD) on the approved dosing for palbociclib (125 mg orally daily on days 1-21 of 28-day cycle) or ribociclib (600 mg orally daily on days 1-21 of 28-day cycle) vs. TTD using titrated dosing approach with the same schedule but starting at a lower dose of palbociclib (100 mg or 75 mg) or ribociclib (400 mg or 200 mg) and escalating the dose if well-tolerated in combination with provider/patient choice endocrine therapy (aromatase inhibitor (AI) or fulvestrant) in patients age 65 or older with HR+/HER2- MBC. The secondary and exploratory objectives will generate evidence needed to personalize treatment decisions by comparing patient-centric secondary outcomes and evaluating baseline factors. Together with their treating physician, participants will choose the CDK4/6 inhibitor (palbociclib or ribociclib) and which endocrine therapy (aromatase inhibitor or fulvestrant) of their choice but will be randomized to either Arm 1 (indicated dosing) or Arm 2 (titrated dosing). Note: Telehealth visits are allowed at any time per institutional guidelines. In addition, the study allows for remote consenting per institutional guidelines.

Gender: All

Ages: 65 Years - Any

Updated: 2026-05-13

16 states

Metastatic Breast Cancer