Tundra Space

Tundra Space

Clinical Research Directory

Browse clinical research sites, groups, and studies.

77 clinical studies listed.

Filters:

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.

This data is also available as a public JSON API. AI systems and LLMs are encouraged to use it for structured queries.

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

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

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

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
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: 2026-03-18

25 states

Advanced Solid Tumor
Advanced Breast Cancer
Metastatic Breast Cancer
+6
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

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: 2026-03-13

24 states

Breast Neoplasms
Breast Cancer
Breast Tumors
+8
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
RECRUITING

NCT07281833

Phase III Study to Evaluate the Safety, Efficacy, and Impact on Quality of Life of Capivasertib Alongside Standard-of-care Endocrine Treatment in Patients With HR+/HER2- Advanced Breast Cancer and Progression on Prior Endocrine-based Treatment

This is a multicentre phase-III-trial to evaluate the use of capivasertib in patients with HR+/HER2- advanced breast cancer and progression on prior endocrine-based treatment. The goal of this study is 1. To evaluate benefit of capivasertib regarding time to next treatment (TTNT1) - i.e., time "on treatment" with capivasertib. 2. To evaluate the benefits of patient reported outcome(PRO)-adherence regarding the deterioration of quality of life (DQoL)-free interval. There is no active comparison group but a historical control group consisting of data of patients treated within the CAPItello-291-study.. Participants will take capivasertib accompanied by standard of care endocrine treatment and are asked to document ther quality of life on standardised questionnaires. Optionally, patients can use eHealth support via their own smart phones.

Gender: All

Ages: 18 Years - Any

Updated: 2026-02-27

1 state

Breast Cancer
HR-positive Breast Cancer
Advanced Breast Cancer
+2
RECRUITING

NCT06744465

NearWave Optical Molecular Monitoring

The purpose of this study is to assess the feasibility of the NearWave optical molecular monitoring system for monitoring therapy progression and predicting pathologic complete response (pCR) of breast cancer patients undergoing neoadjuvant chemotherapy (NAC).

Gender: FEMALE

Ages: 18 Years - Any

Updated: 2026-02-17

1 state

Breast Cancer
HER2-positive Breast Cancer
TNBC - Triple-Negative Breast Cancer
+2
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: 2026-02-12

2 states

Metastatic Breast Cancer
Stage IV Breast Cancer
Breast Cancer
+5
ACTIVE NOT RECRUITING

NCT05383196

Onvansertib + Paclitaxel In TNBC

This research is being done to evaluate the safety and effectiveness of Onvansertib in combination with Paclitaxel in triple-negative breast cancer (TNBC) that has spread to other parts of the body. The names of the study interventions involved in this study are: * Onvansertib * Paclitaxel

Gender: All

Ages: 18 Years - Any

Updated: 2026-02-11

1 state

Breast Cancer
Invasive Breast Cancer
Unresectable Breast Carcinoma
+7
RECRUITING

NCT06388122

DiviTum®TKa: A Biomarker Assay for Efficacy in HR+ Metastatic Breast Cancer Patients

The purpose of this study is to explore the clinical utility of routinely measuring thymidine kinase activity (TKa) in HR+ metastatic breast cancer patients receiving treatment with any approved endocrine therapy either alone or in combination with any approved CDK4/6 inhibitor.

Gender: FEMALE

Ages: 18 Years - Any

Updated: 2026-02-06

1 state

HER2-negative Breast Cancer
Hormone-receptor-positive Breast Cancer
Metastatic Breast Cancer
RECRUITING

NCT04573231

Evaluation of PSMA in HER2- AR+ Metastatic Breast Cancer

The purpose of this research is to determine the expression of prostate specific membrane antigen (PSMA) in human epidermal growth factor receptor 2 (HER2)-negative, androgen receptor (AR)-positive metastatic breast cancer, and to determine its role in resistance to the anti-androgen, bicalutamide. The investigators hypothesize that PSMA expression will correlate with resistance to anti-androgen therapies, as has been documented in prostate cancer, and this can be used to select patients most likely to benefit from these therapies in future clinical trials. 15 people with HER2-negative, AR-positive metastatic breast cancer will be enrolled and be on study for about 3 days.

Gender: All

Ages: 18 Years - Any

Updated: 2026-02-05

1 state

Breast Cancer
HER2-negative Breast Cancer
Metastatic Breast Cancer
RECRUITING

NCT05504707

DecipHER Trial - DC1 Tx for Early-Stage TNBC and ER Low Positive Breast Cancer

The purpose of the study is to find out if an investigational vaccine called Dendritic Cell (DC) vaccine given together with standard of care chemotherapy drugs can help people with Triple Negative and HR low positive breast cancer.

Gender: All

Ages: 18 Years - Any

Updated: 2026-02-05

1 state

Triple Negative Breast Cancer
HER2-negative Breast Cancer
RECRUITING

NCT04150042

SHARON: A Clinical Trial for Metastatic Cancer Using Chemotherapy and Patients' Own Stem Cells

The clinical trial is a phase 1, single-arm trial that will evaluate the safety of the investigational treatment on metastatic pancreatic cancer and metastatic breast cancer. The investigational treatment will involve 2 cycles of a combination of intravenous melphalan, BCNU, vitamin B12b, and vitamin C with autologous hematopoietic stem cell infusion. A dose-escalation schedule is being employed for the vitamin C.

Gender: All

Ages: 18 Years - Any

Updated: 2026-01-29

2 states

Pancreatic Adenocarcinoma Metastatic
BRCA1 Mutation
BRCA2 Mutation
+17
RECRUITING

NCT05305924

Fulvestrant+Abemaciclib With Run-In of Fulvestrant in Er-Positive, Her2-Negative Metastatic Breast Cancer

The study will investigate if CDK4/6 inhibitor holiday will reset the cell cycle process to respond to the combination of fulvestrant and abemaciclib, and this approach may represent an effective therapeutic strategy to manage such patients.

Gender: All

Ages: 18 Years - Any

Updated: 2026-01-28

1 state

ER-Positive Breast Cancer
HER2-negative Breast Cancer
NOT YET RECRUITING

NCT07366112

CDK4/6 Inhibitors Combined With Endocrine Therapy for Neoadjuvant Treatment

Exploring the dynamics of ctDNA following neoadjuvant therapy with CDK4/6 inhibitors combined with endocrine treatment, and its potential to guide de-escalation of adjuvant chemotherapy

Gender: FEMALE

Ages: 18 Years - 75 Years

Updated: 2026-01-26

Hormone Receptor-Positive Breast Cancer
High-risk Breast Cancer
Early-Stage Breast Cancer
+2