Clinical Research Directory
Browse clinical research sites, groups, and studies.
14 clinical studies listed.
Filters:
Tundra lists 14 Hormone Receptor-positive 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.
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
NCT05573126
Phase 1/2 Study to Evaluate EP0062 as Monotherapy and in Combination in Patients With Advanced or Metastatic AR+/HER-2-/ER+ Breast Cancer
The aim of this study is to identify the optimal dose for EP0062 as monotherapy and in combination with standard-of-care therapies to assess its Safety, Tolerability, Pharmacokinetics, and Efficacy in Patients with Relapsed Locally Advanced or Metastatic AR+/HER-2-/ER+ Breast Cancer
Gender: FEMALE
Ages: 18 Years - Any
Updated: 2026-03-20
10 states
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
NCT05115474
Study of Screening Brain MRIs in Stage IV Breast Cancer
The study is a single arm, nonrandomized phase II prospective study, with the goal of investigating the role of screening brain MRIs in neurologically asymptomatic patients with metastatic breast cancer.
Gender: All
Ages: 18 Years - Any
Updated: 2026-02-09
1 state
NCT05501704
ETHAN - ET for Male BC
This research study is looking to see how well male breast cancer responds to preoperative treatment with endocrine therapy and which endocrine therapy regimen is the most effective treatment for male breast cancer. The drugs used in this study are: * Tamoxifen * Anastrozole * Degarelix * Abemaciclib
Gender: MALE
Ages: 18 Years - Any
Updated: 2026-01-07
7 states
NCT05608252
VS-6766+Abema+Fulv in Met HR+/HER- BC
This research is being done to evaluate the safety and effectiveness of a drug currently known as VS-6766 in combination with the drugs abemaciclib and fulvestrant in HR+/HER2-negative breast cancer. The names of the study drugs involved in this study are: * VS-6766 * Abemaciclib * Fulvestrant
Gender: All
Ages: 18 Years - Any
Updated: 2025-10-29
1 state
NCT06570031
ONO-4578-06:Phase I Study of ONO-4578 and Letrozole Plus CDK4 /6 Inhibitors in Breast Cancer
This is a multicenter, open-label, non-controlled, phase I study to investigate the tolerability and safety of ONO-4578 used in combination with standard-of-care letrozole and a CDK4/6 inhibitor (palbociclib or Abemaciclib) as first-line endocrine therapy in postmenopausal patients with metastatic or recurrent hormone receptor-positive, HER2-negative breast cancer.
Gender: FEMALE
Ages: 20 Years - Any
Updated: 2025-07-02
8 states
NCT04706962
TH1902 in Patients With Advanced Solid Tumors
Open label first-in-human study of TH1902 in solid cancer, with 4 sequential parts: Part 1 (dose escalation): patients with recurrent advanced solid tumors (all comers) that have relapsed or are refractory to standard chemotherapy, surgery, radiation therapy, and for which no known effective therapies exist. Part 2 (expansion): selected patient populations with recurrent advanced TNBC, HR+ breast cancer, epithelial ovarian cancer, endometrial cancer, cutaneous melanoma, thyroid cancer, SCLC, prostate cancer and other cancers known to express SORT1 that are refractory to standard therapy. Part 3 (optimization): patients diagnosed with histologically or cytologically confirmed high grade serous ovarian cancer, including high grade peritoneal or fallopian tube cancer, or high grade endometrioid cancer, that is refractory or resistant to standard therapies, should not be considered platinum sensitive, and where current therapy is not considered to be providing benefit. Part 4 (basket expansion): selected cancer type diagnosed with histologically or cytologically confirmed cancers, where TH1902 has been studied and/or showed activity (in Parts 1 to 3), that is refractory or resistant to standard therapies, and where current therapy is not considered to be providing benefit.
Gender: All
Ages: 18 Years - Any
Updated: 2025-04-15
4 states
NCT05868226
PRE-I-SPY Phase I/Ib Oncology Platform Program
I-SPY Phase I/Ib (I-SPY-P1) is an open-label, multisite platform study designed to evaluate single agents or combinations in a metastatic treatment setting that may be relevant for breast cancer patients with the overall goal of moving promising drug regimens into the I-SPY 2 SMART Design Trial (NCT01042379) and/or other oncology-based trials in a timely manner.
Gender: All
Ages: 18 Years - Any
Updated: 2025-04-04
5 states
NCT05020860
Correlation of Clinical Response to Pathologic Response in Patients With Early Breast Cancer
The purpose of this study is to learn whether clinical response (the amount a tumor shrinks based on imaging or tumor measurements obtained by physical exam) predicts pathologic response (the amount of tumor remaining when surgery is performed) in participants with breast cancer who are receiving chemotherapy prior to surgery.
Gender: All
Ages: 18 Years - Any
Updated: 2025-02-27
1 state
NCT05165225
Phase II Neoadjuvant Pyrotinib Combined with Neoadjuvant Chemotherapy in HER2-low-expressing and HR Positive Early or Locally Advanced Breast Cancer: a Single-arm, Non-randomized, Single-center, Open Label Trial
This is a single-arm, prospective, non-randomized, single-center, open label clinical study for evaluating the efficacy and safety of neoadjuvant pyrotinib combined with epirubicin and cyclophosphamide followed by docetaxel in HR positive and HER2-low-expressing early or locally advanced breast cancer.
Gender: FEMALE
Ages: 18 Years - 70 Years
Updated: 2024-11-29
1 state
NCT04997941
Higher Dose Preoperative taMOxifen in Premenopausal bREast Cancer Patients
MORE-T trial is designed to investigate the effect of Tamoxifen 40mg (vs. Tamoxifen 20mg) for 2wks in presurgical setting. The greater reduction in Ki-67 might be observed in Tamoxifen 40mg arm compared to the Tamoxifen 20mg arm. Open Label, Phase 2, Randomized with 1:1 allocation
Gender: FEMALE
Ages: 20 Years - 48 Years
Updated: 2024-04-23
NCT05452213
Comprehensive Analysis of Spatial, Temporal and Molecular Patterns of Ribociclib Efficacy and Resistance in Advanced Breast Cancer Patients
This is a single-arm, open-label phase IV study of patients with advanced HR+/HER2- breast cancer who are treated first line with ribociclib and standard of care endocrine treatment according to SmPC.
Gender: FEMALE
Ages: 18 Years - Any
Updated: 2023-04-18
3 states
NCT05766410
A Randomized Study Comparing the Immune Modulation Effect of Ribociclib, Palbociclib, and Abemaciclib in ER+/HER2- EBC
The 3 FDA-approved CDK4, 6 inhibitors, palbociclib, ribociclib, and abemciclib, all provided progression-free survival benefits when combined with endocrine therapy in advanced ER+/HER2- breast cancer. But, not all of them provided overall survival benefit in the same setting. One of the proposed mechanisms that influence the overall survival difference is from the different influence of the 3 CDK4, 6 inhibitors on tumor microenvironment and/ or immune system. However, there was no head-to-head comparison of the 3 CDK4, 6 inhibitors in the same study. Neoadjuvant therapy provides a window to obtain tissue samples before treatment, during treatment, and after treatment. We aim to compare the immune modulation effects of palbociclib, ribociclib, and abemaciclib with letrozole in neoadjuvant treatment for ER+/HER2- early breast cancer.
Gender: FEMALE
Ages: 20 Years - Any
Updated: 2023-03-16