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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Estrogen therapy Clear all
Recruiting Phase 3 Interventional

A Study to Learn About the Study Medicine Called PF-07248144 in Combination With Fulvestrant in People With HR-positive, HER2-negative Advanced or Metastatic Breast Cancer Who Progressed After a Prior Line of Treatment.

NCT07062965
View directory record Official record
Conditions
Breast Cancer
Interventions
PF-07248144, Fulvestrant, Everolimus, Exemestane
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2030
U.S. locations
102
States / cities
Chandler, Arizona • Gilbert, Arizona • Glendale, Arizona + 85 more
Source: ClinicalTrials.gov public record
Updated May 5, 2026 · Synced Sep 26, 2026, 11:03 PM EDT
Terminated Phase 3 Interventional Results available

S1222 Trial (Everolimus, Anastrozole and Fulvestrant) in Post-Menopausal Stage IV Breast Cancer

NCT02137837
View directory record Official record
Conditions
Breast Cancer
Interventions
Fulvestrant, Anastrozole, Everolimus, Placebo - Anastrozole, Placebo - Everolimus
Drug
Lead sponsor
SWOG Cancer Research Network
Network
Eligibility
18 Years and older · Female only
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2019
U.S. locations
223
States / cities
Anchorage, Alaska • Scottsdale, Arizona • Tucson, Arizona + 150 more
Source: ClinicalTrials.gov public record
Updated Jan 27, 2021 · Synced Sep 26, 2026, 11:03 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

A Comparison of Patch vs. Pill Estrogen Therapy on Testosterone Levels and Thyroid Tests in Menopausal Women

NCT00224094
View directory record Official record
Conditions
Menopause
Interventions
Premarin® (oral) vs. Alora® (transdermal)
Drug
Lead sponsor
Watson Pharmaceuticals
Industry
Eligibility
42 Years to 70 Years · Female only
Enrollment
27 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2002
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 14, 2012 · Synced Sep 26, 2026, 11:03 PM EDT
Completed Phase 3 Interventional Results available

Three Drug Combination Therapy Versus Conventional Treatment of Children With Congenital Adrenal Hyperplasia

NCT00001521
View directory record Official record
Conditions
Congenital Adrenal Hyperplasia (CAH)
Interventions
Fludrocortisone, Hydrocortisone, Letrozole, Flutamide, Testolactone
Drug
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
2 Years to 18 Years
Enrollment
66 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1995 – 2024
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 11, 2025 · Synced Sep 26, 2026, 11:03 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Estrogen Use in Protection From Cognitive Decline

NCT00097058
View directory record Official record
Conditions
Aging, Menopause
Interventions
Not listed
Lead sponsor
Stanford University
Other
Eligibility
45 Years to 65 Years · Female only
Enrollment
71 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2014
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Nov 18, 2014 · Synced Sep 26, 2026, 11:03 PM EDT
Active, not recruiting Phase 2 Interventional

Levels of Circulating Tumor DNA as a Predictive Marker for Early Switch in Treatment for Patients With Metastatic (Stage IV) Breast Cancer

NCT05826964
View directory record Official record
Conditions
Breast Cancer, ER-positive Breast Cancer, HER2-negative Breast Cancer, Metastatic Breast Cancer
Interventions
AI+CDK4/6i, SERD+CDK4/6i, mTOR inhibitor + AI, mTOR inhibitor + SERD, mTOR inhibitor + Selective estrogen receptor modulator, PI3K inhibitor + SERD, PI3K inhibitor + AI, Chemotherapy, Oral SERD, PARPi, AKT inhibitor, Step 3 Arm 2
Drug · Other
Lead sponsor
University of Miami
Other
Eligibility
18 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2029
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Jan 12, 2026 · Synced Sep 26, 2026, 11:03 PM EDT
Completed Phase 3 Interventional

Estrogen Treatment (Oral vs. Patches) in Turner Syndrome

NCT00140998
View directory record Official record
Conditions
Turner Syndrome, Hypogonadism, Premature Ovarian Failure
Interventions
17 beta estradiol
Drug
Lead sponsor
Nemours Children's Clinic
Other
Eligibility
10 Years to 16 Years · Female only
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2004
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Nov 29, 2017 · Synced Sep 26, 2026, 11:03 PM EDT
Completed Phase 1Phase 2 Interventional Results available

A Study of ZN-c5 in Subjects With Breast Cancer

NCT03560531
View directory record Official record
Conditions
Breast Cancer
Interventions
ZN-c5, Palbociclib
Drug
Lead sponsor
Zeno Alpha Inc.
Industry
Eligibility
18 Years and older
Enrollment
181 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
11
States / cities
Tucson, Arizona • Los Angeles, California • Bethesda, Maryland + 6 more
Source: ClinicalTrials.gov public record
Updated Aug 8, 2024 · Synced Sep 26, 2026, 11:03 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Menopause Effects on Vascular Function

NCT03236545
View directory record Official record
Conditions
Cardiovascular Risk Factor
Interventions
No to Low Endogenous Estrogen, Estradiol
Other
Lead sponsor
University of Delaware
Other
Eligibility
18 Years to 65 Years · Female only
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2022
U.S. locations
1
States / cities
Newark, Delaware
Source: ClinicalTrials.gov public record
Updated Nov 13, 2022 · Synced Sep 26, 2026, 11:03 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Resistance Training and Sex Hormone Concentrations During the Menstrual Cycle

NCT04163380
View directory record Official record
Conditions
Women's Health
Interventions
Resistance Training
Behavioral
Lead sponsor
Southern Illinois University Edwardsville
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Edwardsville, Illinois
Source: ClinicalTrials.gov public record
Updated Feb 17, 2020 · Synced Sep 26, 2026, 11:03 PM EDT
Active, not recruiting Phase 4 Interventional Accepts healthy volunteers

Adherence to Vaginal Estrogen Therapy in Hypoestrogenic Women With Recurrent Urinary Tract Infections

NCT06353269
View directory record Official record
Conditions
Recurrent Urinary Tract Infection, Hypoestrogenism
Interventions
Estring Vaginal Product, Vagifem, Estrace 0.01% Vaginal Cream
Drug
Lead sponsor
University of California, Irvine
Other
Eligibility
18 Years and older · Female only
Enrollment
111 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2027
U.S. locations
1
States / cities
Orange, California
Source: ClinicalTrials.gov public record
Updated Jun 10, 2026 · Synced Sep 26, 2026, 11:03 PM EDT
Completed No phase listed Observational

Effects of Activity on Diabetes Risk Among Breast Cancer Survivors on Endocrine Therapy (ABIDE)

NCT06830486
View directory record Official record
Conditions
Breast Cancer
Interventions
No intervention
Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 80 Years · Female only
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Feb 4, 2026 · Synced Sep 26, 2026, 11:03 PM EDT
Not yet recruiting Phase 2 Interventional

Estrogen to Improve Quality of Life for Men With Newly Diagnosed or Recurrent Metastatic Hormone Sensitive Prostate Cancer, EQUIP Trial

NCT07466498
View directory record Official record
Conditions
Castration-Sensitive Prostate Adenocarcinoma, Metastatic Castration-Sensitive Prostate Adenocarcinoma, Stage IVB Prostate Cancer AJCC v8
Interventions
Androgen Receptor Pathway Inhibitor, Transdermal Estrogen, Bone Scan, Computed Tomography, Dual X-ray Absorptiometry, Gonadotropin-releasing Hormone Analog, Magnetic Resonance Imaging, Survey Administration, Biospecimen Collection
Drug · Procedure · Biological + 1 more
Lead sponsor
Fred Hutchinson Cancer Center
Other
Eligibility
18 Years and older · Male only
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Aug 30, 2026 · Synced Sep 26, 2026, 11:03 PM EDT
Terminated Phase 1 Interventional Results available

Examination of Breast Cancer Cells of Pre-menopausal and Post-menopausal Women Before and After Exposure to Tamoxifen or Fulvestrant.

NCT02936206
View directory record Official record
Conditions
Breast Cancer
Interventions
Fulvestrant, Tamoxifen
Drug
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years and older · Female only
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
3
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 18, 2021 · Synced Sep 26, 2026, 11:03 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Progestin (Progesterone-Like Hormones) Induced Dysphoria (Depressed Mood, Irritability, Anxiety)

NCT00001770
View directory record Official record
Conditions
Depressive Disorder, Mood Disorder, Psychomotor Agitation
Interventions
Not listed
Lead sponsor
National Institute of Mental Health (NIMH)
NIH
Eligibility
Female only
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1998 – 2003
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced Sep 26, 2026, 11:03 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Continuation of The Kronos Early Estrogen Prevention Study (KEEPS)

NCT03718494
View directory record Official record
Conditions
Alzheimer Dementia
Interventions
Brain Magnetic Resonance Imaging (MRI), F-18 Florbetapir Positron Emission Tomography (PET) Imaging, F-18 AV-1451 Positron Emission Tomography (PET) Imaging, Neuropsychological Testing
Diagnostic Test · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
49 Years to 72 Years · Female only
Enrollment
299 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2022
U.S. locations
6
States / cities
Phoenix, Arizona • San Francisco, California • New Haven, Connecticut + 3 more
Source: ClinicalTrials.gov public record
Updated Jul 16, 2023 · Synced Sep 26, 2026, 11:03 PM EDT
Active, not recruiting No phase listed Observational

Genetic Analysis in Blood and Tumor Samples From Patients With Advanced or Metastatic Estrogen Receptor Positive and HER2 Negative Breast Cancer Receiving Palbociclib and Endocrine Therapy

NCT03281902
View directory record Official record
Conditions
Advanced Breast Carcinoma, Locally Advanced Breast Carcinoma, Metastatic Breast Carcinoma, Recurrent Breast Carcinoma, Stage III Breast Cancer AJCC v7, Stage IIIA Breast Cancer AJCC v7, Stage IIIB Breast Cancer AJCC v7, Stage IIIC Breast Cancer AJCC v7, Stage IV Breast Cancer AJCC v6 and v7
Interventions
Biopsy, Biospecimen Collection, Laboratory Biomarker Analysis
Procedure · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older · Female only
Enrollment
68 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2028
U.S. locations
3
States / cities
Scottsdale, Arizona • Jacksonville, Florida • Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 8, 2026 · Synced Sep 26, 2026, 11:03 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Prevention of Obesity in Women Via Estradiol Regulation

NCT00687739
View directory record Official record
Conditions
Obesity
Interventions
leuprolide acetate, Estradiol Transdermal, progressive resistance exercise training
Drug · Behavioral
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 49 Years · Female only
Enrollment
79 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2014
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Mar 31, 2025 · Synced Sep 26, 2026, 11:03 PM EDT
Not yet recruiting Phase 2 Interventional

Elacestrant With Everolimus for the Treatment of Recurrent Advanced or Metastatic ER-Positive Endometrial Cancer

NCT07634601
View directory record Official record
Conditions
Advanced Endometrial Carcinoma, Metastatic Endometrial Carcinoma, Recurrent Endometrial Carcinoma, Stage III Endometrial Cancer, Stage IV Endometrial Cancer
Interventions
Biospecimen Collection, Computed Tomography, Elacestrant, Everolimus, Magnetic Resonance Imaging, Positron Emission Tomography, Questionnaire Administration
Procedure · Drug · Other
Lead sponsor
Jonsson Comprehensive Cancer Center
Other
Eligibility
18 Years and older · Female only
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jun 8, 2026 · Synced Sep 26, 2026, 11:03 PM EDT
Terminated Phase 1 Interventional Results available

Phase 1b/2 Study of TTI-101 in Combination for Patients With Metastatic Hormone Receptor-Positive and HER2-Negative Breast Cancer

NCT05384119
View directory record Official record
Conditions
Breast Cancer
Interventions
TTI-101, Palbociclib, Aromatase inhibitor (AI), fulvestrant, ribociclib
Drug
Lead sponsor
Tvardi Therapeutics, Incorporated
Industry
Eligibility
18 Years and older
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
6
States / cities
Fort Lauderdale, Florida • St Louis, Missouri • Nashville, Tennessee + 2 more
Source: ClinicalTrials.gov public record
Updated Sep 23, 2026 · Synced Sep 26, 2026, 11:03 PM EDT
Completed Phase 1 Interventional

Drug-Drug Interaction Study of Entinostat and Exemestane in Postmenopausal Women With ER+ Breast Cancer

NCT02820961
View directory record Official record
Conditions
Breast Cancer, Estrogen Receptor Positive Breast Cancer
Interventions
entinostat, exemestane
Drug
Lead sponsor
Syndax Pharmaceuticals
Industry
Eligibility
18 Years to 85 Years · Female only
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2021
U.S. locations
3
States / cities
Denver, Colorado • Sarasota, Florida • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Dec 14, 2021 · Synced Sep 26, 2026, 11:03 PM EDT
Completed Phase 2 Interventional Results available

A Trial Using ARV-471 or Anastrozole in Post-Menopausal Women With Breast Cancer Prior to Surgery

NCT05549505
View directory record Official record
Conditions
Breast Cancer
Interventions
ARV-471, Anastrozole, Surgical resection of breast tumor
Drug · Procedure
Lead sponsor
Arvinas Inc.
Industry
Eligibility
18 Years and older · Female only
Enrollment
152 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
13
States / cities
Springdale, Arkansas • Los Angeles, California • Torrance, California + 10 more
Source: ClinicalTrials.gov public record
Updated Aug 28, 2025 · Synced Sep 26, 2026, 11:03 PM EDT
Active, not recruiting Phase 3 Interventional Results available

A Study to Learn About a New Medicine Called Vepdegestrant (ARV-471, PF-07850327) in People Who Have Advanced Metastatic Breast Cancer

NCT05654623
View directory record Official record
Conditions
Advanced Breast Cancer
Interventions
ARV-471, Fulvestrant
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
624 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
87
States / cities
Encinitas, California • Fountain Valley, California • Fresno, California + 69 more
Source: ClinicalTrials.gov public record
Updated Mar 17, 2026 · Synced Sep 26, 2026, 11:03 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

The Effects of Reproductive Hormones on Mood and Behavior

NCT00001322
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Leuprolide Acetate 3.75, Estradiol, Progesterone, Placebo suppository, Placebo patch
Drug
Lead sponsor
National Institute of Mental Health (NIMH)
NIH
Eligibility
18 Years to 50 Years · Female only
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1994 – 2020
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 21, 2022 · Synced Sep 26, 2026, 11:03 PM EDT