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Clinical Research Directory

Browse clinical research sites, groups, and studies.

77 clinical studies listed.

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HER2-negative Breast Cancer

Tundra lists 77 HER2-negative 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

NCT05582499

Fudan University Shanghai Cancer Center Breast Cancer Precision Platform Series Study- Neoadjuvant Therapy

The purpose of this study is to establish a prospective, single-center platform research based on clinical subtypes to explore precision neoadjuvant therapy in patients with operable breast cancer who met the indications for neoadjuvant chemotherapy and by the update of basic translational research in the center, especially the refinement of typing, the discovery of new targets and the development of novel targeted drugs, verified the effectiveness of new targeted drugs in neoadjuvant therapy.

Gender: FEMALE

Ages: 18 Years - 70 Years

Updated: 2026-05-28

1 state

Breast Neoplasm
Breast Cancer
Breast Tumors
+7
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

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

NCT05989347

Study to Evaluate Biomarkers and Safety of Dapagliflozin Concomitant With Neoadjuvant Therapy

The primary objective of the study is to assess metabolic plasma markers of insulin resistance in patients with early-stage HER2-negative breast cancers receiving dapagliflozin concomitant with neoadjuvant therapy.

Gender: FEMALE

Ages: 18 Years - Any

Updated: 2026-05-22

1 state

Breast Cancer
Hyperinsulinism
HER2-negative Breast Cancer
TERMINATED

NCT06351332

ZAP-IT: ZN-c3 + Carboplatin + Pembrolizumab in mTNBC

This research is being done to evaluate the safety and effectiveness of a drug currently known as Azenosertib (ZN-C3) in combination with the drugs carboplatin and pembrolizumab in metastatic triple-negative breast cancer. The names of the study drugs involved in this study are: * Azenosertib (a type of WEE1 inhibitor) * Carboplatin (a type of platinum compound) * Pembrolizumab (a type of monoclonal antibody)

Gender: All

Ages: 18 Years - Any

Updated: 2026-05-22

1 state

Breast Cancer
Breast Cancer Female
Triple Negative Breast Cancer
+2
RECRUITING

NCT05512364

Elacestrant for Treating ER+/HER2- Breast Cancer Patients With ctDNA Relapse (TREAT ctDNA)

This is an international, multi-center, randomised, open label, superiority phase III trial of elacestrant vs standard endocrine therapy in patients with ER+/HER2- breast cancer and ctDNA relapse. During the ctDNA screening phase, patients will be tested at different timepoints to detect the presence of ctDNA in their blood. Patients who are found to be ctDNA-positive and have no evidence of distant metastasis, will be randomised 1:1 between standard endocrine treatment (the same they were receiving when tested ctDNA positive) versus elacestrant, provided they meet all eligibility criteria. After completion of the protocol treatment period, treatment will be left at the discretion of the treating physician.

Gender: All

Ages: 18 Years - Any

Updated: 2026-05-15

ER-positive Breast Cancer
HER2-negative Breast Cancer
Stage IIB Breast Cancer
+1
ACTIVE NOT RECRUITING

NCT05889390

Neoadjuvant Concomitant Modulated Electro-hyperthermia in HER2-negative Breast Cancer

The aim of this study is to investigate whether the application of concomitant modulated electro-hyperthermia in a neoadjuvant chemotherapeutic setting is beneficial for patients with HER2-negative, stage II-III breast cancer.

Gender: FEMALE

Ages: 18 Years - Any

Updated: 2026-05-15

1 state

HER2-negative Breast Cancer
ACTIVE NOT RECRUITING

NCT04584255

Niraparib + Dostarlimab In BRCA Mutated Breast Cancer

This research study involves pre-operative therapy that is specifically targeted for breast cancer in individuals with BRCA and PALB2 mutations. The names of the study drugs involved in this study are: * Niraparib (Zejula) * Dostarlimab

Gender: All

Ages: 18 Years - Any

Updated: 2026-05-13

6 states

Stage I Breast Cancer
Stage II Breast Cancer
Stage III Breast Cancer
+5
RECRUITING

NCT01042379

I-SPY TRIAL: Neoadjuvant and Personalized Adaptive Novel Agents to Treat Breast Cancer

The purpose of this study is to further advance the ability to practice personalized medicine by learning which new drug agents are most effective with which types of breast cancer tumors and by learning more about which early indicators of response (tumor analysis prior to surgery via magnetic resonance imaging (MRI) images along with tissue and blood samples) are predictors of treatment success.

Gender: All

Ages: 18 Years - Any

Updated: 2026-05-06

24 states

Breast Neoplasms
Breast Cancer
Breast Tumors
+8
RECRUITING

NCT05982093

Elacestrant With/Without Triptorelin in Premenopausal Women With Luminal Breast Cancer

PREMIERE parallel, non-comparative, two-arm, randomized 1:1, open-label, multicenter, exploratory window of opportunity study in premenopausal women with primary operable HR+/HER2-negative breast cancer with aiming at evaluating the biological effects of elacestrant with or without triptorelin.

Gender: FEMALE

Ages: 35 Years - Any

Updated: 2026-04-24

3 states

Breast Cancer
HER2-negative Breast Cancer
Hormone Receptor Positive Tumor
+1
ACTIVE NOT RECRUITING

NCT04595565

Sacituzumab Govitecan in Primary HER2-negative Breast Cancer

Phase III, prospective, multi-center, randomized, open label, parallel group, study in patients with HER2-negative breast cancer with residual disease after neoadjuvant chemotherapy with 1:1 allocation to: * Arm A: Sacituzumab govitecan (days 1, 8 q3w for eight cycles); * Arm B: treatment of physician´s choice (TPC, defined as capecitabine or platinum-based chemotherapy for eight cycles or observation. Treatment in either arm will be given for eight cycles. In patients with HR-positive breast cancer, endocrine-based therapy, which includes the use of CDK4/6 inhibitors, will be administered according to local guidelines. The start of endocrine therapy will be at the discretion of the investigator; however, it will be encouraged to start after surgery/radiotherapy in patients without additional cytotoxic agents. Adjuvant pembrolizumab can be given until the completion of radiotherapy before randomization. Within the study the use of pembrolizumab in patients with TNBC who received pembrolizumab as neoadjuvant therapy is allowed as monotherapy in the TPC arm, according to the approval of pembrolizumab in this setting.

Gender: All

Ages: 18 Years - 99 Years

Updated: 2026-04-22

17 states

HER2-negative Breast Cancer
Triple Negative Breast Cancer
RECRUITING

NCT07218432

A Study of the TheraBionic P1 Device in Breast Cancer

The goal of this clinical trial is to learn if adding cancer-specific amplitude-modulated radiofrequency electromagnetic field therapy (TheraBionic P1 device) to the treatment of resectable early-stage breast cancer will affect the pathological response.

Gender: FEMALE

Ages: 22 Years - Any

Updated: 2026-04-21

1 state

Breast Cancer Stage I
Breast Cancer Stage II
Breast Cancer Stage IIIA
+2
RECRUITING

NCT07198724

ERADICATE: A Phase Ib/II Study of Elacestrant Plus Trastuzumab Deruxtecan in Patients With CDK4/6 Inhibitor and Endocrine-resistant HR+/HER2-low or HER2-ultralow Metastatic Breast Cancer

The goal of this study is to evaluate the safety and efficacy of elacestrant in combination with trastuzumab deruxtecan (T-DXd) in participants with hormone receptor-positive (HR+), HER2-low or HER2-ultralow, metastatic breast cancer that is resistant to prior CDK4/6 inhibitor and endocrine therapy. The names of the study drugs involved in this study are: * Elacestrant (a type of selective estrogen receptor degrader) * Trastuzumab deruxtecan (a type of standard of care antibody drug conjugate)

Gender: All

Ages: 18 Years - Any

Updated: 2026-04-09

1 state

Metastatic Breast Cancer
HER2 Low Breast Carcinoma
HER2-negative Breast Cancer
+2
RECRUITING

NCT06649331

Platform Study of ADC Rechallenge in ADC-treated Metastatic Breast Cancer

This is a prospective, open-label, phase 2 platform trial. The purpose of this study is to test the safety and effectiveness of the antibody-conjugated drugs (ADCs) in patients with advanced breast cancer who had previously used antibody-conjugated drugs.

Gender: All

Ages: 18 Years - Any

Updated: 2026-04-08

1 state

Advanced Breast Cancer
Metastatic Breast Cancer
Triple Negative Breast Cancer (TNBC)
+2
RECRUITING

NCT05467891

Ribociclib And Endocrine Treatment of Physician's Choice for Locoregional Recurrent, Resected Hormone Receptor Positive HER2 Negative Breast Cancer

This is an open label, multicenter, single arm phase II study to evaluate the efficacy and safety of ribociclib and ET in patients with locoregional recurrence of HR-positive, HER2-negative breast cancer.

Gender: All

Ages: 18 Years - Any

Updated: 2026-04-08

18 states

Locoregional Recurrence
Hormone Receptor-positive Breast Cancer
HER2-negative Breast Cancer
RECRUITING

NCT06382948

Elacestrant + Everolimus in Patients ER+/HER2-, ESR1mut, Advanced Breast Cancer Progressing to ET and CDK4/6i.

This trial will study a type of advanced breast cancer (ABC) defined as endocrine receptor (ER)-positive/human epidermal growth factor receptor 2(HER2)-negative and estrogen receptor 1 (ESR1)-mutated. Patients will be treated with elacestrant, a compound that acts as a selective estrogen receptor degrader, and everolimus (or placebo), a kinase inhibitor indicated for the treatment of postmenopausal women with advanced hormone receptor-positive, HER2-negative breast cancer. The main purpose of the study is to analyze the efficacy (to find out how effective a treatment is) of elacestrant plus everolimus therapy in patients who have ER-positive/HER2-negative, ESR1-mutated, ABC progressing to endocrine therapy and cyclin-dependent kinase 4/6 (CDK4/6) inhibitor. The efficacy of elacestrant plus everolimus combination will be determined by assessing the period from elacestrant plus everolimus (or placebo) treatment initiation until to the first occurrence of disease progression, unacceptable toxicity, death, or discontinuation from the study treatment for any other reason, whichever occurs first, defined as progression free survival. Rigorous eligibility criteria based on specific co-morbidities and clinicopathologic features of their disease have been designed to minimize the risk of patients participating in this study. The anticipated favorable clinical benefits of elacestrant combined with everolimus are projected to outweigh the risks of this treatment. This study will be performed in full compliance with International Council for Harmonisation of Technical Requirements for Pharmaceuticals for Human Use (ICH) and all applicable local Good Clinical Practice (GCP) and regulations.

Gender: All

Ages: 18 Years - Any

Updated: 2026-04-03

1 state

Advanced Breast Cancer
ER-positive Breast Cancer
HER2-negative Breast Cancer
+1
RECRUITING

NCT05660083

Alpelisib/iNOS Inhibitor/Nab-paclitaxel in Patients With HER2 Negative Metaplastic Breast Cancer (MpBC)

This is a research study to test the safety and effectiveness of using the drug alpelisib together with chemotherapy (nab-paclitaxel) and a drug called L-NMMA in patients with HER2 negative metastatic or locally advanced metaplastic breast cancer, who have not responded to previous treatments. Participants in this study in addition to the standard care chemotherapy will also receive the drug alpelisib and L-NMMA. The therapies will be administered every 3 weeks (1 cycle) until disease progression, toxicity or until the participant withdraws from the study. The nab-paclitaxel chemotherapy will be administered intravenously on Day 1 of the 3 week cycles. Participants will take the drug alpelisib by mouth once daily at a dose determined by a safety study and the drug L-NMMA will be given intravenously on days 1 to 5 of the 3 week cycles.

Gender: All

Ages: 18 Years - Any

Updated: 2026-04-03

2 states

HER2-negative Breast Cancer
Metastatic Breast Cancer
Metaplastic Breast Carcinoma
+1
RECRUITING

NCT07483307

A Study of the Impact of Endocrine Therapy on Surgical Outcomes in People With Breast Cancer

The purpose of this study is to look at how effective neoadjuvant (before surgery) endocrine therapy (NET) is in participants with invasive lobular carcinoma (ILC) who have breast-conserving surgery (BCS). The main purpose of the study is to see if NET reduces the chance of having cancer cells at the edges of tissue removed during surgery (positive margins).

Gender: FEMALE

Ages: 50 Years - Any

Updated: 2026-03-19

2 states

Breast Cancer
HER2-negative Breast Cancer
HER2 Negative Breast Carcinoma
+1
ACTIVE NOT RECRUITING

NCT06590857

Trial of 225Ac-DOTATATE (RYZ101) in Subjects With ER+, HER2-negative Unresectable or Metastatic Breast Cancer Expressing SSTRs.

Phase 1b/2 open-label trial of 225Ac-DOTATATE (RYZ101) in subjects with ER+, HER2-negative unresectable or metastatic breast cancer expressing SSTRs.

Gender: All

Ages: 18 Years - Any

Updated: 2026-03-18

23 states

Metastatic Breast Cancer
HER2-negative Breast Cancer
ER+ Breast Cancer
+1
RECRUITING

NCT07379918

Real-life Evaluation of Endopredict® in Early HR+/HER2- Breast Cancer

EndoPredict is a genomic signature used to determine the 10-year risk of recurrence in early HR+/HER2- breast cancers classified as of intermediate risk according to conventional clinical and pathological criteria, and to guide the adjuvant treatment decision: hormone therapy alone or hormone therapy and chemotherapy. Since 2016, french laboratories performing the Endopredict test, included prospectively analyzed tumors in the SiMoSein registry with data collection : age, tumor size, lymph node status, histology, grade, HR and HER2 IHC status, Ki67, EPscore, Epclin score, risk of relapse, absolue benefit from chemotherapy, risk of late relapse The main objectives of the trial are to: Evaluate long-term relapse-free survival and overall survival over a 10-year period in breast cancer patients who underwent EndoPredict® testing according to: * EPclin risk class (low vs. high), * Lymph node status (N0/N1), * Tumor size (pT), * Age groups (\<40 years, 40-49 years, 50-69 years, ≥70 years), * EP score alone. This study provide real-life data to determine the clinical usefulness of this molecular signature in the management of early HR+/HER2- breast cancers. The ultimate goal is to be able to offer therapeutic de-escalation (avoiding chemotherapy) to patients who are reliably assessed as having a low risk of relapse.

Gender: FEMALE

Ages: 18 Years - Any

Updated: 2026-03-13

Breast Cancer (Early Breast Cancer)
Breast Cancer Survivors
Breast Cancer Prognostic
+2
NOT YET RECRUITING

NCT07466927

Study of Multi-mode Thermal Therapy Combined With Immunotherapy In Patients With HER2-negative Breast Cancer With Liver Metastases

This is a prospective, open-label, phase II platform trial. The purpose of this study is to test the safety and effectiveness of multi-mode thermal therapy combined with immunotherapy in patients with HER2-negative breast cancer with liver metastases who had previously received systemic therapy

Gender: FEMALE

Ages: 18 Years - Any

Updated: 2026-03-12

1 state

HER2-negative Breast Cancer
RECRUITING

NCT04585750

The Evaluation of PC14586 in Patients With Advanced Solid Tumors Harboring a TP53 Y220C Mutation (PYNNACLE)

The Phase 2 monotherapy portion of this study is currently enrolling and will evaluate the efficacy and safety of PC14586 (INN rezatapopt) in participants with locally advanced or metastatic solid tumors harboring a TP53 Y220C mutation. The Phase 1 portion of the study will assess the safety, tolerability and preliminary efficacy of multiple dose levels of rezatapopt as monotherapy and in Phase 1b in combination with pembrolizumab.

Gender: All

Ages: 12 Years - Any

Updated: 2026-03-12

41 states

Advanced Solid Tumor
Advanced Malignant Neoplasm
Metastatic Cancer
+27
RECRUITING

NCT05524584

Anastrazole, Fulvestrant & Abemaciclib for HR+HER2- Metastatic Breast Cancer

This is a phase 2, open-label, singled-arm clinical trial determining efficacy of combination therapy with anastrozole, fulvestrant and abemaciclib in subjects with breast cancer. These are subjects who are newly diagnosed advanced or metastatic hormone receptor positive breast cancer or subjects who have progressed following treatment free interval of more than 12 months following adjuvant or neoadjuvant treatment.

Gender: All

Ages: 18 Years - Any

Updated: 2026-03-11

1 state

Breast Cancer
Metastatic Breast Cancer
Hormone Receptor-positive Breast Cancer
+1
RECRUITING

NCT06650423

Adherence to Aromatase Inhibitors ± Abemaciclib Treatment in Patients With Early-stage HER2-negative Breast Cancer

Around 90% of breast cancer patients are diagnosed at an early stage and approximately 70% are hormone receptor-positive and HER2-negative (HR+/HER2-). Despite advancements in adjuvant endocrine therapy, 20-30% of early-stage breast cancer patients relapse within the first decade post-surgery. A recent clinically meaningful therapeutic option for these patients has been cyclin-dependent kinases 4/6 inhibitors (CDK4/6 inhibitors). Abemaciclib and ribociclib were assessed in the adjuvant setting, both showing improvement in invasive disease-free survival (IDFS). Abemaciclib has been approved by the FDA and EMA for HR+/HER2- early breast cancer at high risk of disease recurrence and is the first addition to the Slovenian treatment regimen in routine clinical practice. Poor medication adherence can directly affect the effectiveness of treatment for early HR+/HER2- breast cancer. While adherence data in patients treated with aromatase inhibitors are available, the adherence rate in patients with early HR+/HER2- breast cancer taking abemaciclib remains unclear. In this study, investigators hypothesize that patients receiving abemaciclib in combination with aromatase inhibitors will have lower medication adherence and higher discontinuation rates compared to those receiving aromatase inhibitors alone. It is expected that patients with better quality of life, better cognitive functioning, and a more positive attitude toward their therapy will demonstrate higher medication adherence rates. Adherence may also be influenced by additional factors, such as age and prior treatments.

Gender: FEMALE

Ages: 18 Years - 99 Years

Updated: 2026-03-06

Early Breast Cancer
Hormone Receptor Positive Tumor
HER2-negative Breast Cancer