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ClinicalTrials.gov public records Last synced Oct 9, 2026, 12:06 PM EDT

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Showing 25–44 of 44 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: tamoxifen, letrozole, anastrozole, or exemestane Clear all
Enrolling by invitation Phase 3 Interventional

Safety Extension Study for Subjects With HR+, HER2- Breast Cancer for Subjects Who Have Completed the OVELIA Study

NCT05645536
View directory record Official record
Conditions
Breast Cancer
Interventions
TOL2506, Tamoxifen, Letrozole tablets, Anastrozole Tablets, Exemestane Tablets
Drug
Lead sponsor
Tolmar Inc.
Industry
Eligibility
18 Years to 51 Years
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2030
U.S. locations
17
States / cities
Greenbrae, California • Fort Lauderdale, Florida • Lexington, Kentucky + 14 more
Source: ClinicalTrials.gov public record
Updated Sep 1, 2026 · Synced Oct 9, 2026, 12:06 PM EDT
Withdrawn Phase 4 Interventional

Endocrine Therapy in Treating Patients With HER2 Negative, Low Risk Breast Cancer

NCT03238703
View directory record Official record
Conditions
HER2/Neu Negative, Invasive Breast Carcinoma, Postmenopausal, Stage 0 Breast Cancer, Stage IA Breast Cancer
Interventions
Anastrozole, Exemestane, Laboratory Biomarker Analysis, Letrozole, Quality-of-Life Assessment, Questionnaire Administration, Tamoxifen Citrate, Toremifene Citrate
Drug · Other
Lead sponsor
Fred Hutchinson Cancer Center
Other
Eligibility
60 Years and older · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2025
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Dec 27, 2018 · Synced Oct 9, 2026, 12:06 PM EDT
Active, not recruiting Phase 2 Interventional

A Single Arm Phase II Study of ADjuvant Endocrine Therapy, Pertuzumab, and Trastuzumab for Patients With Anatomic Stage I Hormone Receptor-positive, HER2-positive Breast Cancer

NCT04569747
View directory record Official record
Conditions
HER2-positive Breast Cancer, Invasive Carcinoma of the Breast, Breast Cancer, Node Negative Breast Cancer, Micrometastasis Breast Cancer, Hormone Receptor Positive Breast Cancer
Interventions
Pertuzumab+TRASTUZUMAB, ADJUVANT ENDOCRINE THERAPY
Combination Product · Drug
Lead sponsor
Dana-Farber Cancer Institute
Other
Eligibility
18 Years and older
Enrollment
393 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2032
U.S. locations
32
States / cities
Stamford, Connecticut • Miami, Florida • Atlanta, Georgia + 20 more
Source: ClinicalTrials.gov public record
Updated Oct 6, 2026 · Synced Oct 9, 2026, 12:06 PM EDT
Recruiting Phase 2 Interventional

Evaluating the Use of a Medication 'Switch' vs Guideline-directed Interventions for Relieving Side Effects of Aromatase Inhibitors Among Breast Cancer Patients

NCT07071038
View directory record Official record
Conditions
Breast Cancer, Adjuvant Treatment, Early Stage Breast Cancer
Interventions
Switch, Guideline Directed Intervention (GDI)
Drug · Other
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
18 Years and older
Enrollment
62 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Lebanon, New Hampshire
Source: ClinicalTrials.gov public record
Updated Feb 12, 2026 · Synced Oct 9, 2026, 12:06 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Oral Health and Oral Health-Related Quality of Life in Early Stage Breast Cancer Survivors

NCT01272570
View directory record Official record
Conditions
Breast Cancer, Xerostomia
Interventions
Not listed
Lead sponsor
University of Michigan
Other
Eligibility
50 Years and older · Female only
Enrollment
58 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2013
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated May 27, 2015 · Synced Oct 9, 2026, 12:06 PM EDT
Active, not recruiting Phase 3 Interventional

A Study of Imlunestrant Versus Standard Endocrine Therapy in Participants With Early Breast Cancer

NCT05514054
View directory record Official record
Conditions
Breast Neoplasms
Interventions
Imlunestrant, Tamoxifen, Anastrozole, Letrozole, Exemestane
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
18 Years and older
Enrollment
8,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2032
U.S. locations
137
States / cities
Daphne, Alabama • Huntsville, Alabama • Mobile, Alabama + 115 more
Source: ClinicalTrials.gov public record
Updated Apr 2, 2026 · Synced Oct 9, 2026, 12:06 PM EDT
Recruiting Phase 2 Interventional

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

NCT05467891
View directory record Official record
Conditions
Locoregional Recurrence, Hormone Receptor-positive Breast Cancer, HER2-negative Breast Cancer
Interventions
Ribociclib, Fulvestrant, Anastrozole, Letrozole, Exemestane
Drug
Lead sponsor
Oana Danciu
Other
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2029
U.S. locations
21
States / cities
Birmingham, Alabama • Phoenix, Arizona • Washington D.C., District of Columbia + 18 more
Source: ClinicalTrials.gov public record
Updated Jul 16, 2026 · Synced Oct 9, 2026, 12:06 PM EDT
Completed Phase 2 Interventional Results available

Radiation Therapy, Palbociclib, and Hormone Therapy in Treating Breast Cancer Patients With Bone Metastasis

NCT03691493
View directory record Official record
Conditions
Anatomic Stage IV Breast Cancer AJCC v8, Estrogen Receptor Positive, HER2/Neu Negative, Metastatic Breast Carcinoma, Metastatic Malignant Neoplasm in the Bone, Progesterone Receptor Positive, Prognostic Stage IV Breast Cancer AJCC v8
Interventions
Anastrozole, Exemestane, Fulvestrant, Letrozole, Palbociclib, Radiation Therapy, Tamoxifen
Drug · Radiation
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
10
States / cities
Atlanta, Georgia • Augusta, Georgia • Columbus, Georgia + 2 more
Source: ClinicalTrials.gov public record
Updated Feb 17, 2025 · Synced Oct 9, 2026, 12:06 PM EDT
Recruiting Phase 3 Interventional

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

NCT05894239
View directory record Official record
Conditions
Metastatic Breast Cancer
Interventions
Inavolisib, Phesgo, Placebo, Taxane-based Chemotherapy, Optional Endocrine Therapy of Investigator's Choice
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years and older
Enrollment
230 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2032
U.S. locations
20
States / cities
Gilbert, Arizona • Burbank, California • Corona, California + 17 more
Source: ClinicalTrials.gov public record
Updated Sep 21, 2026 · Synced Oct 9, 2026, 12:06 PM EDT
Recruiting Phase 1Phase 2 Interventional

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

NCT06590857
View directory record Official record
Conditions
Metastatic Breast Cancer, HER2-negative Breast Cancer, ER+ Breast Cancer, Advanced Breast Cancer, Metastatic Breast Cancer With Bone Involvement, Bone Metastases in Subjects With Advanced Breast Cancer, ER-Positive HER2-Negative Breast Cancer, Estrogen Receptor-positive Breast Cancer, Hormone-sensitive Metastatic Breast Cancer, Hormone-Sensitive Breast Cancer
Interventions
RYZ101, Standard of Care Endocrine Therapy
Drug
Lead sponsor
RayzeBio, Inc.
Industry
Eligibility
Not listed
Enrollment
64 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2033
U.S. locations
25
States / cities
Phoenix, Arizona • Irvine, California • San Diego, California + 21 more
Source: ClinicalTrials.gov public record
Updated Oct 6, 2026 · Synced Oct 9, 2026, 12:06 PM EDT
Active, not recruiting Phase 3 Interventional

Ovarian Suppression Evaluating Subcutaneous Leuprolide Acetate in Breast Cancer

NCT04906395
View directory record Official record
Conditions
Breast Cancer
Interventions
TOL2506, Tamoxifen, Letrozole Tablets, Anastrozole Tablets, Exemestane Tablets
Drug
Lead sponsor
Tolmar Inc.
Industry
Eligibility
18 Years to 49 Years
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
17
States / cities
Greenbrae, California • Parker, Colorado • Chicago, Illinois + 14 more
Source: ClinicalTrials.gov public record
Updated Sep 29, 2026 · Synced Oct 9, 2026, 12:06 PM EDT
Completed Phase 2 Interventional Results available

Palbociclib in Combination With Adjuvant Endocrine Therapy for Hormone Receptor Positive, HER2 Negative Invasive Breast Cancer

NCT02040857
View directory record Official record
Conditions
Breast Cancer
Interventions
Palbociclib, Aromatase Inhibitor
Drug
Lead sponsor
Dana-Farber Cancer Institute
Other
Eligibility
18 Years and older
Enrollment
162 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2024
U.S. locations
10
States / cities
San Francisco, California • Indianapolis, Indiana • Boston, Massachusetts + 5 more
Source: ClinicalTrials.gov public record
Updated Apr 29, 2025 · Synced Oct 9, 2026, 12:06 PM EDT
Active, not recruiting Phase 3 Interventional

A Study Evaluating the Efficacy and Safety of Adjuvant Giredestrant Compared With Physician's Choice of Adjuvant Endocrine Monotherapy in Participants With Estrogen Receptor-Positive, HER2-Negative Early Breast Cancer (lidERA Breast Cancer)

NCT04961996
View directory record Official record
Conditions
Early Breast Cancer
Interventions
Giredestrant, Physician's Choice of Endocrine Therapy, LHRH Agonist
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years and older
Enrollment
4,170 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2033
U.S. locations
72
States / cities
Daphne, Alabama • Bakersfield, California • Fullerton, California + 66 more
Source: ClinicalTrials.gov public record
Updated Jun 17, 2026 · Synced Oct 9, 2026, 12:06 PM EDT
Completed Phase 2 Interventional Results available

Neoadjuvant Endocrine Therapy in Hormone Receptor-Positive, Human Epidermal Growth Factor Receptor 2 (HER2)-Negative Node-Negative Breast Cancer

NCT03219476
View directory record Official record
Conditions
Breast Cancer, Invasive Breast Cancer
Interventions
Anastrozole, Letrozole, Exemestane, Tamoxifen
Drug
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
18 Years and older · Female only
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2025
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Apr 29, 2025 · Synced Oct 9, 2026, 12:06 PM EDT
Recruiting Phase 2 Interventional

Endocrine Treatment Alone for Elderly Patients With Estrogen Receptor Positive Operable Breast Cancer and Low Recurrence Score

NCT02476786
View directory record Official record
Conditions
Breast Cancer, Cancer of Breast, Breast Neoplasms, Cancer of the Breast
Interventions
FACT-B, Goserelin, Anastrozole, Exemestane, Fulvestrant, Tamoxifen, Archived tissue collection
Behavioral · Drug · Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
70 Years and older · Female only
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2032
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 27, 2026 · Synced Oct 9, 2026, 12:06 PM EDT
Not yet recruiting Phase 2 Interventional

Neu Direction: Testing the Efficacy of Adding HER Inhibition to Standard of Care in Metastatic MLH1-low Endocrine-resistant ER+/HER2- Breast Cancer

NCT07729046
View directory record Official record
Conditions
Metastatic Invasive Breast Cancer, Resistant Breast Cancer, ER+, HER2-, Metastatic Breast Cancer
Interventions
Neratinib + endocrine therapy, Endocrine therapy may include one of the following therapies: letrozole, anastrozole, exemestane, tamoxifen or fulvestrant, CDK4/6 + Endocrine therapy
Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older · Female only
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2027 – 2035
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Jul 27, 2026 · Synced Oct 9, 2026, 12:06 PM EDT
Recruiting Phase 3 Interventional

Pre-Operative Window of ET to Inform RT Decisions (POWER II)

NCT06507618
View directory record Official record
Conditions
Breast Cancer Female
Interventions
Tamoxifen, Letrozole, Anastrozole, or Exemestane
Drug
Lead sponsor
University of Virginia
Other
Eligibility
65 Years and older · Female only
Enrollment
354 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2034
U.S. locations
6
States / cities
New Haven, Connecticut • Charlottesville, Virginia • Culpeper, Virginia + 3 more
Source: ClinicalTrials.gov public record
Updated Jun 30, 2026 · Synced Oct 9, 2026, 12:06 PM EDT
Completed Phase 2 Interventional Results available

ER Reactivation Therapy for Breast Cancer

NCT02188745
View directory record Official record
Conditions
Metastatic Breast Cancer
Interventions
17B-estradiol, Letrozole, Anastrozole, Exemestane
Drug
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
18 Years and older · Female only
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2024
U.S. locations
3
States / cities
Springfield, Massachusetts • Rochester, Minnesota • Lebanon, New Hampshire
Source: ClinicalTrials.gov public record
Updated Sep 25, 2026 · Synced Oct 9, 2026, 12:06 PM EDT
Completed Phase 1 Interventional

T-VEC With Chemotherapy or Endocrine Therapy in Treating Participants With HER2- Negative Breast Cancer

NCT03554044
View directory record Official record
Conditions
Anatomic Stage III Breast Cancer AJCC v8, Anatomic Stage IIIA Breast Cancer AJCC v8, Anatomic Stage IIIB Breast Cancer AJCC v8, Anatomic Stage IIIC Breast Cancer AJCC v8, Anatomic Stage IV Breast Cancer AJCC v8, Estrogen Receptor Positive, HER2/Neu Negative, Invasive Breast Carcinoma, Prognostic Stage III Breast Cancer AJCC v8, Prognostic Stage IIIA Breast Cancer AJCC v8, Prognostic Stage IIIB Breast Cancer AJCC v8, Prognostic Stage IIIC Breast Cancer AJCC v8, Prognostic Stage IV Breast Cancer AJCC v8, Recurrent Breast Carcinoma
Interventions
Anastrozole, Exemestane, Fulvestrant, Letrozole, Paclitaxel, Talimogene Laherparepvec, Tamoxifen, Nab paclitaxel, Gemcitabine, Carboplatin
Drug · Biological
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated May 21, 2025 · Synced Oct 9, 2026, 12:06 PM EDT
Recruiting Phase 1Phase 2 Interventional

First-in-Human Study of Tersolisib (STX-478) as Monotherapy and in Combination With Other Antineoplastic Agents in Participants With Advanced Solid Tumors

NCT05768139
View directory record Official record
Conditions
Breast Cancer, Solid Tumors, Adult
Interventions
STX-478, Fulvestrant, Ribociclib, Palbociclib, Letrozole, Anastrozole, Exemestane, Tamoxifen, Abemaciclib, Imlunestrant, Metformin
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
18 Years and older
Enrollment
880 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2030
U.S. locations
28
States / cities
Los Angeles, California • San Francisco, California • Aurora, Colorado + 22 more
Source: ClinicalTrials.gov public record
Updated Jul 7, 2026 · Synced Oct 9, 2026, 12:06 PM EDT