Clinical Research Directory
Browse clinical research sites, groups, and studies.
231 clinical studies listed.
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Tundra lists 231 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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NCT04115306
Phase 1/1b/2 Study of Oral PMD-026 in Patients With Metastatic Breast Cancer
The purpose of this study is to test the safety and tolerability of PMD-026 in patients with metastatic breast cancer. PMD-026 is a targeted oral agent designed to kill tumor cells in metastatic breast cancer.
Gender: All
Ages: 18 Years - Any
Updated: 2026-07-16
8 states
NCT07704801
CDK4/6 Inhibitors in Metastatic HR-Positive Breast Cancer
This study is a retrospective review aimed at evaluating the real-world outcomes and clinical efficacy of CDK4/6 inhibitors (such as Palbociclib, Ribociclib, or Abemaciclib) in patients diagnosed with metastatic luminal A and luminal B breast cancer. The study will assess how patients responded to these treatments based on their specific breast cancer subtype (Luminal A vs. Luminal B) by reviewing their medical records.
Gender: All
Ages: 18 Years - 80 Years
Updated: 2026-07-15
NCT03424005
A Study Evaluating the Efficacy and Safety of Multiple Treatment Combinations in Patients With Metastatic or Locally Advanced Breast Cancer
This is an umbrella study evaluating the efficacy and safety of multiple treatment combinations in participants with metastatic or inoperable locally advanced breast cancer. The study will be performed in two stages. During Stage 1, seven cohorts will be enrolled in parallel in this study: Cohort 1 will consist of programmed death-ligand 1 (PD-L1)-positive participants who have received no prior systemic therapy for metastatic or inoperable locally advanced triple-negative breast cancer (TNBC) (first-line \[1L\] PD-L1+ cohort). Cohort 2 will consist of participants who had disease progression during or following 1L treatment with chemotherapy for metastatic or inoperable locally-advanced TNBC and have not received cancer immunotherapy (CIT) (second-line \[2L\] CIT-naïve cohort). Cohort 3, 5, 6 and 7 will consist of participants with locally advanced or metastatic hormone receptor-positive (HR+), human epidermal growth factor receptor 2 (HER2)-negative disease with one or more PIK3CA mutations. Cohort 4 will consist of participants with locally advanced or metastatic HER2+ /HER2-low disease with one or more PIK3CA mutations who had disease progression on standard-of-care therapies (HER2+ /HER2-low cohort). In each cohort, eligible participants will initially be assigned to one of several treatment arms (Stage 1). During Stage 2, participants in the 2L CIT-naïve cohort who experience disease progression, loss of clinical benefit, or unacceptable toxicity during Stage 1 may be eligible to continue treatment with a different treatment combination, provided Stage 2 is open for enrollment and all eligibility criteria are met.
Gender: All
Ages: 18 Years - Any
Updated: 2026-07-15
13 states
NCT07386938
A Study of the Efficacy, Safety and Pharmacokinetics of RPH-051 and Perjeta® in Combination With Trastuzumab and Docetaxel as the 1st Line Therapy in Patients With HER2-positive Breast Cancer
The main purpose of this study is to prove non-inferiority, as well as to demonstrate the comparability of safety and immunogenicity of RPH-051 and Perjeta® in combination with trastuzumab and docetaxel as the 1st line therapy for patients with HER2-positive breast cancer (BC). Secondary Purposes are to evaluate the pharmacokinetics of RPH-051 in comparison with Perjeta® after a single-dose and repeated intravenous administration
Gender: FEMALE
Ages: 18 Years - Any
Updated: 2026-07-14
2 states
NCT06557148
A Study Comparing Cancer Imaging Approaches in People With Lobular Breast Cancer
The purpose of this study to compare two types of cancer imaging scans to see which is better at detecting and monitoring metastatic ILC. This study will compare PET/CT (positron emission tomography/computed tomography) scans using the radiotracer fluorine 18 (18F)-fluoroestradiol (FES) with a standard imaging approach for detecting and monitoring ILC, PET/CT scans using the radiotracer 18F-fluorodeoxyglucose (FDG). These scans will be referred to as FES PET/CT scans and FDG PET/CT scans.
Gender: All
Ages: 18 Years - Any
Updated: 2026-07-14
2 states
NCT07342309
Real-World Treatment Patterns and Outcomes in HER2-Altered Metastatic Breast Cancer Patients in the United States
This study aims to address the following key objectives in patients with HER2-altered mBC: Primary objectives * Estimate the prevalence of human epidermal growth factor receptor 2 positive (HER2+), human epidermal growth factor receptor 2 (HER2) mutation, cooccurrence of HER2+ and HER2 mutation among adult patients with metastatic breast cancer (mBC) * Among mBC patients with HER2+ and HER2 mutation, describe the following: * Baseline demographic and clinical characteristics * Treatment patterns during follow-up including 1L through fifth-line (5L) settings * Real-world overall survival (rwOS) for 1L through 5L Secondary objectives \- Among mBC patients with HER2+ and HER2 mutation, examine the following (as permissible in the study data): * Real-world progression-free survival (rwPFS) * Real-world time to discontinuation (rwTTD) * Real-world time to next treatment (rwTTNT) * Real-world overall response rate (rwORR)
Gender: All
Ages: 18 Years - Any
Updated: 2026-07-14
1 state
NCT07624617
Fast-Her: Fasting Effects on Breast Cancer Treatment
We hypothesize that promoting a fasting state will strengthen the anti-cancer effects of PI3K inhibitors in metastatic breast cancer (MBC) treatment. The primary objective of this study is to assess acceptability of prolonged fasting in this population.
Gender: All
Ages: 18 Years - Any
Updated: 2026-07-13
1 state
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: 2026-07-10
25 states
NCT05534438
A Study on Adding Precisely Targeted Radiation Therapy (Stereotactic Body Radiation Therapy) to the Usual Treatment Approach (Drug Therapy) in People With Breast Cancer
The purpose of this study is to see if using Stereotactic Body Radiation Therapy/SBRT to treat a single metastatic site where cancer has worsened may be an effective treatment for people with oligometastatic breast cancer. Participants will stay on their usual drug therapy while they receive SBRT. This combination of SBRT to a single metastatic site and usual drug therapy may prevent participants' cancer from worsening in other metastatic sites or spreading.
Gender: All
Ages: 18 Years - Any
Updated: 2026-07-10
3 states
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: 2026-07-10
25 states
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: 2026-07-10
4 states
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: 2026-07-09
15 states
NCT06386263
HER-TEMPO - Real World Treatment-related Outcomes on T-DXd in Canada
Trastuzumab deruxtecan (T-DXd) has been studied in multiple global prospective DESTINY-Breast trials and has a marketing authorization from Health Canada for patients with HER2-positive metastatic breast cancer (mBC) and HER2-low mBC, respectively. Multiple stakeholders, including clinicians, patients, regulators, and healthcare decision makers, are interested in real-world treatment-related outcomes in order to better represent the effectiveness of therapies in routine care settings.
Gender: All
Ages: 18 Years - 130 Years
Updated: 2026-07-08
1 state
NCT07619365
Trastuzumab Deruxtecan and Lovastatin in HER2-low and Ultralow Advanced or Metastatic Breast Cancer
The purpose of this study is to evaluate use of lovastatin, a drug that may lower CAV-1 levels, in order to increase HER2 expression on cells and enhance the uptake and efficacy of trastuzumab deruxtecan (T-DXd) in HER2-low and ultralow advanced metastatic breast cancer. Trastuzumab deruxtecan (T-DXd) is an FDA approved antibody drug conjugate for HER2-low and ultralow breast cancer and lovastatin is a cholesterol lowering agent.
Gender: All
Ages: 18 Years - Any
Updated: 2026-07-08
1 state
NCT06982521
Phase 3 Study of RLY-2608 + Fulvestrant vs Capivasertib + Fulvestrant as Treatment for Locally Advanced or Metastatic PIK3CA-mutant HR+/HER2- Breast Cancer
This is a global, multicenter, open-label, randomized Phase 3 study comparing the efficacy and safety of RLY-2608 + fulvestrant to capivasertib + fulvestrant for the treatment of patients with HR+/HER2- ABC with PIK3CA mutation following recurrence or progression on or after treatment with a CDK4/6 inhibitor.
Gender: All
Ages: 18 Years - Any
Updated: 2026-07-08
33 states
NCT07512271
Generative AI Patient Education Module for Breast Oncology
This study evaluates the safety, accuracy, and impact of an artificial intelligence (AI) tool designed to support patient education in breast cancer care for breast oncology patients under selected physicians care within the University of California, San Francisco breast cancer center and affiliate sites.
Gender: All
Ages: 18 Years - Any
Updated: 2026-07-06
1 state
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: 2026-07-06
2 states
NCT07487844
Pulsed Electric Field Ablation for Metastatic Breast Cancer
This is a phase I trial of the safety of image-guided pulsed electric field (PEF) ablation for the locoregional treatment of superficial soft tissue lesions in adults with metastatic breast cancer using the AliyaTM Pulsed Electric Field System.
Gender: All
Ages: 18 Years - Any
Updated: 2026-07-06
1 state
NCT06062498
Elacestrant vs Elacestrant Plus a CDK4/6 Inhibitor in Patients With ERpositive/HER2-negative Advanced or Metastatic Breast Cancer
Breast cancer is not only the leading cause of cancer in women, but also the leading cause of cancer deaths in women. Estrogen receptor-positive and HER2-negative breast cancer is the most prevalent breast cancer subtype. Endocrine therapy is the mainstay of treatment; however, due to the varied nature of the disease, development of resistance to this therapeutic approach is very common in the metastatic setting. The purpose of this study is to see whether the effectiveness of elacestrant can be enhanced by combining it with a targeted agent such as a CDK4/6 inhibitor to treat patients with ER+/HER2- or metastatic breast cancer with prior exposure to a CDK4/6 inhibitor.
Gender: All
Ages: 18 Years - Any
Updated: 2026-07-02
1 state
NCT05964504
Improving Survival for Metastatic Lobular Breast Cancer (PLUMB Registry)
This is a prospective observational registry for patients with invasive lobular carcinoma (ILC) of the breast. After the first 1cohort is enrolled, the collected data will be utilized to develop an ILC specific response assessment tool.
Gender: All
Ages: 18 Years - Any
Updated: 2026-07-02
3 states
NCT06157892
A Study of Disitamab Vedotin With Other Anticancer Drugs in Solid Tumors
This clinical trial is studying solid tumor cancers. A solid tumor is one that starts in part of your body like your lungs or liver instead of your blood. Once they've grown bigger in one spot or spread to other parts of the body, they're harder to treat. This is called advanced or metastatic cancer. Participants in this study must have breast cancer or gastric cancer. Participants must have tumors that have HER2 on them. This allows the cancer to grow more quickly or spread faster. There are few treatment options for patients with advanced or metastatic solid tumors that express HER2. This clinical trial uses an experimental drug called disitamab vedotin (DV). Disitamab vedotin is a type of antibody drug conjugate or ADC. ADCs are designed to stick to cancer cells and kill them. This clinical trial uses a drug called tucatinib, which has been approved to treat cancer in the United States and some other countries. This drug is sold under the brand name TUKYSA®. This study will test how safe and how well DV with tucatinib works for participants with solid tumors. This study will also test what side effects happen when participants take these drugs. A side effect is anything a drug does to the body besides treating the disease.
Gender: All
Ages: 18 Years - Any
Updated: 2026-07-02
33 states
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: 2026-07-02
3 states
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: 2026-06-30
2 states
NCT05945732
DESTINY Breast Respond HER2-(Ultra)Low Europe
Trastuzumab deruxtecan (T-DXd) as monotherapy is indicated for the treatment of adult patients with unresectable or metastatic HER2-low breast cancer who have received prior chemotherapy in the metastatic setting or developed disease recurrence during or within 6 months of completing adjuvant chemotherapy. Based on the extended therapeutic indication of Trastuzumab deruxtecan (Enhertu®), a new patient population will be enrolled, comprising adult patients with unresectable or metastatic HR-positive, HER2-low, or HER2-(ultra)low breast cancer who have received at least one endocrine therapy in the metastatic setting and are not considered suitable for endocrine therapy as the next line of treatment.
Gender: All
Ages: 18 Years - Any
Updated: 2026-06-29