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ClinicalTrials.gov public records Last synced Oct 17, 2026, 7:21 AM EDT

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Showing 1–24 of 291 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: tamoxifen citrate Clear all
Completed Phase 3 Interventional Results available

Tamoxifen Citrate or Letrozole With or Without Bevacizumab in Treating Women With Stage IIIB or Stage IV Breast Cancer

NCT00601900
View directory record Official record
Conditions
Invasive Breast Carcinoma, Recurrent Breast Carcinoma, Stage III Breast Cancer AJCC v6, Stage IV Breast Cancer AJCC v6 and v7
Interventions
Bevacizumab, Laboratory Biomarker Analysis, Letrozole, Questionnaire Administration, Tamoxifen Citrate
Biological · Other · Drug
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older · Female only
Enrollment
394 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2024
U.S. locations
521
States / cities
Mobile, Alabama • Fort Smith, Arkansas • Antioch, California + 355 more
Source: ClinicalTrials.gov public record
Updated Aug 28, 2026 · Synced Oct 17, 2026, 7:21 AM EDT
Active, not recruiting Phase 2 Interventional

A Study of Flibanserin in Breast Cancer Survivors on Tamoxifen or Aromatase Inhibitors

NCT03707340
View directory record Official record
Conditions
Breast Cancer, Hyposexual Desire Disorder
Interventions
Flibanserin Pill
Drug
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
21 Years and older · Female only
Enrollment
43 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2026
U.S. locations
7
States / cities
Norwalk, Connecticut • Basking Ridge, New Jersey • Middletown, New Jersey + 4 more
Source: ClinicalTrials.gov public record
Updated Nov 4, 2025 · Synced Oct 17, 2026, 7:21 AM EDT
Completed Phase 2 Interventional Results available

Primary Chemotherapy With Docetaxel-Capecitabine and Doxorubicin-Cyclophosphamide in Breast Cancer

NCT00005908
View directory record Official record
Conditions
Breast Cancer, Breast Neoplasm
Interventions
Docetaxel - Dose A, Anastrozole, cyclophosphamide, Docetaxel - Dose B, Doxorubicin hydrochloride, Tamoxifen Citrate, Capecitabine - Dose B, Capecitabine - Dose A
Drug
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2008
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 19, 2013 · Synced Oct 17, 2026, 7:21 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Impact of Low-dose Tamoxifen on BPU

NCT02979301
View directory record Official record
Conditions
High Background Uptake on MBI
Interventions
Tamoxifen
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
40 Years and older · Female only
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 16, 2019 · Synced Oct 17, 2026, 7:21 AM EDT
Recruiting Phase 2 Interventional

A Phase 2 Single-Arm Open-Label Pilot Trial Evaluating Zanidatamab (ZW25) in Patients With Early Stage HER2/Neu Positive (HER2+) Breast Cancer (BC)

NCT05035836
View directory record Official record
Conditions
Breast Cancer, HER2-positive
Interventions
Zanidatamab, Letrozole, Tamoxifen
Drug
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older · Female only
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2028
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 24, 2026 · Synced Oct 17, 2026, 7:21 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Neutrophil Extracellular Traps Formation in Breast Cancer Patients Taking Tamoxifen

NCT05056857
View directory record Official record
Conditions
Breast Carcinoma
Interventions
Biospecimen Collection, Electronic Health Record Review
Procedure · Other
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older · Female only
Enrollment
290 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2026
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Oct 13, 2026 · Synced Oct 17, 2026, 7:21 AM 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 17, 2026, 7:21 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Enhancing Osteoporosis Therapy: Can We Open the Anabolic Window?

NCT01166958
View directory record Official record
Conditions
Osteoporosis
Interventions
Teriparatide, Raloxifene
Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
60 Years to 89 Years · Female only
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Sep 22, 2014 · Synced Oct 17, 2026, 7:21 AM EDT
Recruiting Phase 2 Interventional

Functional Imaging in Prediction of Response to Abemaciclib for Advanced Hormone Receptor-Positive, HER2-Negative Breast Cancer

NCT06179303
View directory record Official record
Conditions
Anatomic Stage III Breast Cancer AJCC v8, Anatomic Stage IV Breast Cancer AJCC v8, Locally Advanced Unresectable HER2-Negative Breast Carcinoma, Locally Advanced Unresectable Hormone Receptor-Positive Breast Carcinoma, Metastatic HER2-Negative Breast Carcinoma, Metastatic Hormone Receptor-Positive Breast Carcinoma
Interventions
Abemaciclib, Anastrozole, Biospecimen Collection, Computed Tomography, Diagnostic Imaging Testing, Exemestane, Fludeoxyglucose F-18, Fluorine F 18 Fluoro Furanyl Norprogesterone, Fulvestrant, Gonadotropin-releasing Hormone Analog, Letrozole, Positron Emission Tomography, Tamoxifen, Therapeutic Estradiol
Drug · Procedure · Other + 1 more
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
3
States / cities
St Louis, Missouri • Chapel Hill, North Carolina • Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Sep 24, 2026 · Synced Oct 17, 2026, 7:21 AM EDT
Completed Phase 2 Interventional Results available

Studying Blood Samples From Women With Breast Cancer or Ductal Carcinoma In Situ Who Are Receiving Tamoxifen

NCT00764322
View directory record Official record
Conditions
Breast Cancer, Menopausal Symptoms
Interventions
tamoxifen citrate, gene expression analysis, pharmacogenomic studies, questionnaire administration, quality-of-life assessment
Drug · Genetic · Other + 1 more
Lead sponsor
UNC Lineberger Comprehensive Cancer Center
Other
Eligibility
21 Years to 120 Years · Female only
Enrollment
501 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
7
States / cities
Chapel Hill, North Carolina • Charlotte, North Carolina • Durham, North Carolina + 4 more
Source: ClinicalTrials.gov public record
Updated Aug 1, 2017 · Synced Oct 17, 2026, 7:21 AM EDT
Completed Phase 2 Interventional Results available

Adjuvant Ribociclib With Endocrine Therapy in Hormone Receptor+/HER2- High Risk Early Breast Cancer

NCT03078751
View directory record Official record
Conditions
Breast Cancer
Interventions
Ribociclib, Adjuvant endocrine therapy, Placebo
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
33
States / cities
Tucson, Arizona • Fayetteville, Arkansas • Bakersfield, California + 28 more
Source: ClinicalTrials.gov public record
Updated Oct 11, 2021 · Synced Oct 17, 2026, 7:21 AM EDT
Completed Phase 3 Interventional

Phase III Study of Atamestane Plus Toremifene Versus Letrozole in Advanced Breast Cancer

NCT00044291
View directory record Official record
Conditions
Breast Neoplasms, Neoplasms, Hormone-dependent
Interventions
atamestane, toremifene, letrozole, aromatase inhibition, hormone therapy, endocrine therapy, antiestrogen therapy
Drug · Procedure
Lead sponsor
Intarcia Therapeutics
Industry
Eligibility
18 Years and older · Female only
Enrollment
865 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2006
U.S. locations
17
States / cities
Lake Havasu City, Arizona • Tucson, Arizona • Greenbrae, California + 14 more
Source: ClinicalTrials.gov public record
Updated Jul 31, 2015 · Synced Oct 17, 2026, 7:21 AM EDT
Completed Phase 3 Interventional

Exemestane in Treating Postmenopausal Women With Resected Stage I, Stage II, or Stage IIIA Breast Cancer Who Have Completed 5 Years of Tamoxifen

NCT00016432
View directory record Official record
Conditions
Breast Cancer
Interventions
exemestane, Placebo
Drug
Lead sponsor
NSABP Foundation Inc
Network
Eligibility
18 Years and older · Female only
Enrollment
1,598 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2011
U.S. locations
150
States / cities
Huntsville, Alabama • Phoenix, Arizona • Little Rock, Arkansas + 129 more
Source: ClinicalTrials.gov public record
Updated Apr 19, 2011 · Synced Oct 17, 2026, 7:21 AM EDT
Active, not recruiting Phase 3 Interventional

A Study to Evaluate the Efficacy and Safety of Giredestrant in Combination With Phesgo (Pertuzumab, Trastuzumab, and Hyaluronidase-zzxf) Versus Phesgo in Participants With Locally Advanced or Metastatic Breast Cancer (heredERA Breast Cancer)

NCT05296798
View directory record Official record
Conditions
Locally Advanced or Metastatic Breast Cancer
Interventions
Phesgo, Giredestrant, Docetaxel, Paclitaxel, LHRH Agonist, Optional Endocrine Therapy of Investigator's Choice
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years and older
Enrollment
922 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2030
U.S. locations
10
States / cities
Tucson, Arizona • Los Angeles, California • Jacksonville, Florida + 7 more
Source: ClinicalTrials.gov public record
Updated Oct 2, 2026 · Synced Oct 17, 2026, 7:21 AM EDT
Not listed Phase 2 Interventional

Radiation Therapy, Temozolomide, Tamoxifen, and Carboplatin in Treating Patients With Malignant Gliomas

NCT00492687
View directory record Official record
Conditions
Brain and Central Nervous System Tumors
Interventions
carboplatin, tamoxifen citrate, temozolomide, adjuvant therapy, radiation therapy
Drug · Procedure · Radiation
Lead sponsor
San Diego Pacific Oncology & Hematology Associates
Other
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2006
U.S. locations
1
States / cities
Encinitas, California
Source: ClinicalTrials.gov public record
Updated Jan 10, 2014 · Synced Oct 17, 2026, 7:21 AM EDT
Terminated Phase 2 Interventional Results available

A Precision Medicine Approach (SMMART-ACT) for the Treatment of Patients With Advanced Sarcoma, Prostate, Breast, Ovarian or Pancreatic Cancer

NCT06630325
View directory record Official record
Conditions
Advanced Breast Carcinoma, Advanced Malignant Solid Neoplasm, Advanced Ovarian Carcinoma, Advanced Pancreatic Carcinoma, Advanced Prostate Carcinoma, Advanced Sarcoma, Anatomic Stage III Breast Cancer AJCC v8, Anatomic Stage IV Breast Cancer AJCC v8, Stage III Ovarian Cancer AJCC v8, Stage III Pancreatic Cancer AJCC v8, Stage III Prostate Cancer AJCC v8, Stage IV Ovarian Cancer AJCC v8, Stage IV Pancreatic Cancer AJCC v8, Stage IV Prostate Cancer AJCC v8
Interventions
Abemaciclib, Biopsy, Bone Scan, Echocardiography, Exemestane, Gemcitabine, Letrozole, Multigated Acquisition Scan, Osimertinib, Pemetrexed, Survey Administration, Tamoxifen, Biospecimen Collection
Drug · Procedure · Other
Lead sponsor
OHSU Knight Cancer Institute
Other
Eligibility
18 Years and older
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Apr 28, 2026 · Synced Oct 17, 2026, 7:21 AM EDT
Recruiting Phase 2 Interventional Accepts healthy volunteers

Low Dose Tamoxifen With or Without Omega-3 Fatty Acids for Breast Cancer Risk Reduction

NCT06195306
View directory record Official record
Conditions
Breast Atypical Hyperplasia, Breast Carcinoma, Breast Ductal Carcinoma In Situ, Breast Lobular Carcinoma In Situ
Interventions
Biospecimen Collection, Mammography, Omega-3-Acid Ethyl Esters, Questionnaire Administration, Random Periareolar Fine-Needle Aspiration, Tamoxifen
Procedure · Drug · Other
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
45 Years to 74 Years · Female only
Enrollment
66 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
3
States / cities
Kansas City, Kansas • Ann Arbor, Michigan • Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 4, 2026 · Synced Oct 17, 2026, 7:21 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

AFTER: Altering Fat Through Estrogen and Raloxifene

NCT00149604
View directory record Official record
Conditions
Postmenopause
Interventions
conjugated estrogens, Raloxifene, exercise plus mild caloric restriction for weight loss
Drug · Behavioral
Lead sponsor
National Institute on Aging (NIA)
NIH
Eligibility
50 Years to 70 Years · Female only
Enrollment
108 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2000 – 2006
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Dec 2, 2009 · Synced Oct 17, 2026, 7:21 AM EDT
Completed Not applicable Interventional

Diindolylmethane in Treating Patients With Breast Cancer

NCT01391689
View directory record Official record
Conditions
Stage IA Breast Cancer, Stage IB Breast Cancer, Stage II Breast Cancer, Stage IIIA Breast Cancer
Interventions
diindolylmethane, placebo
Dietary Supplement
Lead sponsor
University of Arizona
Other
Eligibility
19 Years and older · Female only
Enrollment
144 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2016
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Nov 6, 2017 · Synced Oct 17, 2026, 7:21 AM EDT
Completed Phase 2 Interventional

Phase II Metastatic ER+/PgR+ Nolvadex +/- Iressa Study

NCT00229697
View directory record Official record
Conditions
Breast Neoplasms
Interventions
Gefitinib, Tamoxifen
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 130 Years · Female only
Enrollment
317 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2015
U.S. locations
4
States / cities
Berkeley, California • Palm Springs, California • St Louis, Missouri + 1 more
Source: ClinicalTrials.gov public record
Updated Oct 5, 2015 · Synced Oct 17, 2026, 7:21 AM EDT
Completed No phase listed Observational

Tamoxifen Pharmacogenetics and Clinical Effects

NCT00228930
View directory record Official record
Conditions
Breast Cancer
Interventions
Tamoxifen (pharmacodynamic analysis)
Drug
Lead sponsor
National Institute of General Medical Sciences (NIGMS)
NIH
Eligibility
18 Years to 70 Years · Female only
Enrollment
297 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2007
U.S. locations
2
States / cities
Indianapolis, Indiana • Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Sep 25, 2008 · Synced Oct 17, 2026, 7:21 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

Genetic Risk Estimation of Breast Cancer Prior to Preventive Medication Uptake

NCT02517593
View directory record Official record
Conditions
Breast Cancer
Interventions
Polygenic Risk Score
Genetic
Lead sponsor
Mayo Clinic
Other
Eligibility
35 Years to 75 Years · Female only
Enrollment
151 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2019
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Dec 30, 2020 · Synced Oct 17, 2026, 7:21 AM 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 17, 2026, 7:21 AM EDT
Recruiting Phase 3 Interventional

Fertility Preservation Using Tamoxifen and Letrozole in Estrogen Sensitive Tumors Trial

NCT03011684
View directory record Official record
Conditions
Infertility
Interventions
Tamoxifen, Letrozole
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
309 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2028
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jun 4, 2026 · Synced Oct 17, 2026, 7:21 AM EDT