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Showing 1–24 of 24 matching trials from the live ClinicalTrials.gov search.
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Completed Phase 2 Interventional

Impact of Endocrine Therapy and Abemaciclib on Host and Tumor Immune Cell Repertoire/Function in Advanced ER+/HER2- Breast Cancer

NCT04352777
View directory record Official record
Conditions
Metastatic Breast Cancer, Locally Advanced Breast Cancer, Hormone Receptor Positive Tumor
Interventions
Abemaciclib, Fulvestrant, Aromatase Inhibitors
Drug
Lead sponsor
Duke University
Other
Eligibility
18 Years and older · Female only
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 19, 2025 · Synced Sep 5, 2026, 9:52 PM EDT
Completed Phase 2 Interventional

Biological and Clinical Effects of Palbociclib With Ovarian Suppression and Letrozole in the Neoadjuvant Treatment of Breast Cancer

NCT03628066
View directory record Official record
Conditions
Breast Cancer
Interventions
Letrozole, Palbociclib, Goserelin, Oncotype DX Breast Recurrence Score
Drug · Diagnostic Test
Lead sponsor
NSABP Foundation Inc
Network
Eligibility
18 Years and older · Female only
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
11
States / cities
Fountain Valley, California • Laguna Hills, California • Long Beach, California + 5 more
Source: ClinicalTrials.gov public record
Updated Apr 19, 2022 · Synced Sep 5, 2026, 9:52 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Brown Adipose Tissue Activity in Pre- and Postmenopausal Women

NCT02927392
View directory record Official record
Conditions
Menopause, Obesity
Interventions
Leuprolide acetate
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 99 Years · Female only
Enrollment
69 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2023
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jun 12, 2024 · Synced Sep 5, 2026, 9:52 PM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers

Adaptions and Resiliency to Multi-Stressor OpeRations

NCT06455969
View directory record Official record
Conditions
Musculoskeletal Injury, Hypogonadism, Hormonal Contraception
Interventions
Goserelin 3.6 MG, Multi-Stressor Training, Testosterone gel (AndroGel 5g), Testosterone gel (AndroGel 1.25g)
Drug · Other
Lead sponsor
Bradley Nindl
Other
Eligibility
18 Years to 40 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2027
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 17, 2026 · Synced Sep 5, 2026, 9:52 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Evaluation of Endocrine Therapy Effects of Host Immunity in Early Stage Breast Cancer

NCT03719495
View directory record Official record
Conditions
Breast Cancer, Estrogen Receptor-positive Breast Cancer, Healthy
Interventions
Not listed
Lead sponsor
Duke University
Other
Eligibility
18 Years to 75 Years · Female only
Enrollment
68 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated May 15, 2024 · Synced Sep 5, 2026, 9:52 PM EDT
Completed Phase 2 Interventional Results available

Neurobiology of Bulimia Nervosa

NCT04225221
View directory record Official record
Conditions
Bulimia Nervosa
Interventions
Estradiol, Micronized progesterone, Leuprolide Acetate, Placebo Oral Capsule
Drug
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 42 Years · Female only
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 25, 2022 · Synced Sep 5, 2026, 9:52 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Regulation of Cervical Mucus Secretion

NCT02969590
View directory record Official record
Conditions
Fertility, Contraception
Interventions
Leuprolide acetate, Estrogen and Progesterone Replacement, Progestin
Drug
Lead sponsor
Oregon Health and Science University
Other
Eligibility
21 Years to 40 Years · Female only
Enrollment
5 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Oct 17, 2019 · Synced Sep 5, 2026, 9:52 PM EDT
Recruiting Phase 3 Interventional

Evaluating the Addition of Adjuvant Chemotherapy to Ovarian Function Suppression Plus Endocrine Therapy in Premenopausal Patients With pN0-1, ER-Positive/HER2-Negative Breast Cancer and an Oncotype Recurrence Score Less Than or Equal to 25

NCT05879926
View directory record Official record
Conditions
Breast Cancer
Interventions
Ovarian Function Suppression + Aromatase Inhibitor, Adjuvant Chemotherapy + Ovarian Function Suppression
Drug
Lead sponsor
NRG Oncology
Other
Eligibility
18 Years to 60 Years · Female only
Enrollment
3,960 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2034
U.S. locations
1226
States / cities
Birmingham, Alabama • Anchorage, Alaska • Fairbanks, Alaska + 809 more
Source: ClinicalTrials.gov public record
Updated Sep 1, 2026 · Synced Sep 5, 2026, 9:52 PM EDT
Completed Phase 2 Interventional Results available

Estradiol Suppression for the Treatment of Metastatic Breast Cancer in Premenopausal Women

NCT00186121
View directory record Official record
Conditions
Breast Cancer
Interventions
Anastrozole (Arimidex), Goserelin (Zoladex)
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 70 Years · Female only
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2013
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Oct 6, 2019 · Synced Sep 5, 2026, 9:52 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effects of Estrogen Deficiency on Energy Expenditure

NCT01846728
View directory record Official record
Conditions
Obesity
Interventions
Estrogen suppression
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
20 Years to 40 Years · Female only
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2016
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Nov 17, 2019 · Synced Sep 5, 2026, 9:52 PM EDT
Completed Phase 3 Interventional Results available

Triptorelin With Either Exemestane or Tamoxifen in Treating Premenopausal Women With Hormone-Responsive Breast Cancer

NCT00066703
View directory record Official record
Conditions
Breast Cancer
Interventions
exemestane, tamoxifen, triptorelin
Drug
Lead sponsor
ETOP IBCSG Partners Foundation
Network
Eligibility
18 Years to 65 Years · Female only
Enrollment
2,672 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2024
U.S. locations
139
States / cities
Burbank, California • La Jolla, California • Mission Hills, California + 106 more
Source: ClinicalTrials.gov public record
Updated Feb 5, 2026 · Synced Sep 5, 2026, 9:52 PM EDT
Completed Not applicable Interventional Results available

Effect of Metformin on Sensitivity of the GnRH Pulse Generator to Suppression by Estradiol and Progesterone

NCT01427595
View directory record Official record
Conditions
Polycystic Ovary Syndrome, Hyperandrogenism
Interventions
Metformin, Progesterone, estrace
Drug
Lead sponsor
University of Virginia
Other
Eligibility
10 Years to 17 Years · Female only
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2015
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Jan 7, 2021 · Synced Sep 5, 2026, 9:52 PM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers

Role of Menopause in Thermoregulation

NCT06798571
View directory record Official record
Conditions
Menopause, Aging
Interventions
Elagolix Oral Tablet, Estradiol patch, cellulose placebo, placebo patch
Drug · Other
Lead sponsor
Penn State University
Other
Eligibility
42 Years to 64 Years · Female only
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
University Park, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 23, 2026 · Synced Sep 5, 2026, 9:52 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Pre-Exposure Prophylaxis (PrEP)- Gender Affirming Hormone Therapy (GAHT) Interactions in TGW

NCT04760691
View directory record Official record
Conditions
HIV, Prophylaxis, Transgender
Interventions
Truvada alone, Truvada plus Leuprolide 11.25mg intramuscular injection, Truvada plus Estradiol 1 mg, Truvada plus Estradiol 6 mg, Estradiol 6 mg alone
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years and older · Male only
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 5, 2026 · Synced Sep 5, 2026, 9:52 PM EDT
Completed No phase listed Observational

Stress Test in Detecting Heart Damage in Premenopausal Women With Stage I-III Breast Cancer

NCT03505736
View directory record Official record
Conditions
Anatomic Stage I Breast Cancer AJCC v8, Anatomic Stage IA Breast Cancer AJCC v8, Anatomic Stage IB Breast Cancer AJCC v8, Anatomic Stage II Breast Cancer AJCC v8, Anatomic Stage IIA Breast Cancer AJCC v8, Anatomic Stage IIB Breast Cancer AJCC v8, 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, Premenopausal, Prognostic Stage I Breast Cancer AJCC v8, Prognostic Stage IA Breast Cancer AJCC v8, Prognostic Stage IB Breast Cancer AJCC v8, Prognostic Stage II Breast Cancer AJCC v8, Prognostic Stage IIA Breast Cancer AJCC v8, Prognostic Stage IIB Breast Cancer AJCC v8, 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
Interventions
Adenosine, Magnetic Resonance Imaging, Regadenoson, Stress Management Therapy
Biological · Procedure · Drug
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
Up to 55 Years · Female only
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 28, 2026 · Synced Sep 5, 2026, 9:52 PM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers Results available

Polycystic Ovary Syndrome (PCOS) and Sleep Apnea

NCT00203996
View directory record Official record
Conditions
Polycystic Ovary Syndrome, Obstructive Sleep Apnea
Interventions
continuous positive airway pressure (CPAP), depot leuprolide plus estrogen/progestin replacement, pioglitazone, REM frag, SWS supp
Device · Drug · Procedure
Lead sponsor
University of Chicago
Other
Eligibility
18 Years to 40 Years
Enrollment
37 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2008
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 20, 2023 · Synced Sep 5, 2026, 9:52 PM EDT
Not yet recruiting Phase 1Phase 2 Interventional

BRE-06: Study to Increase Tolerance to Aromatase Inhibitors for Patients With Early-Stage Hormone Receptor Positive Breast Cancer Who Developed Hypoactive Sexual Desire Disorder

NCT07596212
View directory record Official record
Conditions
Early-stage Breast Cancer, Hypoactive Sexual Desire Disorder, Hormone Receptor Positive Breast Carcinoma, Breast Cancer
Interventions
Aromatase Inhibitors, Bupropion, GnRH agonist
Drug
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
18 Years and older · Female only
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2031
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Aug 23, 2026 · Synced Sep 5, 2026, 9:52 PM EDT
Completed Not applicable Interventional Results available

Mirena and Estrogen for Control of Perimenopause Symptoms and Ovulation Suppression

NCT01613131
View directory record Official record
Conditions
Menopausal and Other Perimenopausal Disorders
Interventions
Mirena, Estradiol, Placebo Gel
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
40 Years to 52 Years · Female only
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Dec 1, 2015 · Synced Sep 5, 2026, 9:52 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Role of the Gut Microbiota in Estrogen Metabolism and Dietary Flax as a Potential Modulator.

NCT03183102
View directory record Official record
Conditions
Menopause
Interventions
Flaxseed
Dietary Supplement
Lead sponsor
Colorado State University
Other
Eligibility
20 Years to 40 Years · Female only
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2022
U.S. locations
1
States / cities
Fort Collins, Colorado
Source: ClinicalTrials.gov public record
Updated Jul 30, 2024 · Synced Sep 5, 2026, 9:52 PM EDT
Terminated Phase 3 Interventional Results available

Continued HER2 Suppression With Lapatinib Plus Trastuzumab Versus Trastuzumab Alone

NCT00968968
View directory record Official record
Conditions
Cancer
Interventions
Lapatinib, Trastuzumab
Drug · Biological
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years and older · Female only
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2018
U.S. locations
112
States / cities
Chandler, Arizona • Flagstaff, Arizona • Gilbert, Arizona + 93 more
Source: ClinicalTrials.gov public record
Updated Jun 9, 2019 · Synced Sep 5, 2026, 9:52 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Ovarian Hormone Suppression on Vascular and Cognitive Function

NCT03112226
View directory record Official record
Conditions
Cognitive Impairment, Estrogen Deficiency, Menopause, Endothelial Dysfunction, Vascular Stiffness
Interventions
GnRHant + E2, GnRHant + Placebo
Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
2
States / cities
Aurora, Colorado • Boulder, Colorado
Source: ClinicalTrials.gov public record
Updated Jun 6, 2021 · Synced Sep 5, 2026, 9:52 PM EDT
Completed Phase 2 Interventional Results available

Anastrozole and Letrozole After Surgery for the Treatment of Stage I-III Breast Cancer

NCT04294225
View directory record Official record
Conditions
Anatomic Stage I Breast Cancer AJCC v8, Anatomic Stage IA Breast Cancer AJCC v8, Anatomic Stage IB Breast Cancer AJCC v8, Anatomic Stage II Breast Cancer AJCC v8, Anatomic Stage IIA Breast Cancer AJCC v8, Anatomic Stage IIB Breast Cancer AJCC v8, 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, Early-Stage Breast Carcinoma, Invasive Breast Carcinoma, Prognostic Stage I Breast Cancer AJCC v8, Prognostic Stage IA Breast Cancer AJCC v8, Prognostic Stage IB Breast Cancer AJCC v8, Prognostic Stage II Breast Cancer AJCC v8, Prognostic Stage IIA Breast Cancer AJCC v8, Prognostic Stage IIB Breast Cancer AJCC v8, 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
Interventions
Anastrozole, Letrozole
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older · Female only
Enrollment
161 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
3
States / cities
Scottsdale, Arizona • Jacksonville, Florida • Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 27, 2025 · Synced Sep 5, 2026, 9:52 PM EDT
Terminated Phase 2 Interventional

Letrozole and Goserelin or Leuprolide in Treating Premenopausal Estrogen Receptor-Positive Patients With Stage IV Breast Cancer

NCT00498901
View directory record Official record
Conditions
Breast Cancer
Interventions
goserelin, letrozole, leuprolide acetate, conventional surgery
Drug · Procedure
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older · Female only
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
2
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated May 8, 2013 · Synced Sep 5, 2026, 9:52 PM EDT
Completed Not applicable Interventional Results available

FLT PET in Measuring Treatment Response in Patients With Newly Diagnosed Estrogen Receptor-Positive, HER2-Negative Stage I-III Breast Cancer

NCT01928186
View directory record Official record
Conditions
Estrogen Receptor Positive, HER2/Neu Negative, Male Breast Carcinoma, Stage IA Breast Cancer, Stage IB Breast Cancer, Stage IIA Breast Cancer, Stage IIB Breast Cancer, Stage IIIA Breast Cancer, Stage IIIB Breast Cancer, Stage IIIC Breast Cancer
Interventions
Fluorothymidine F-18, Positron Emission Tomography, Laboratory Biomarker Analysis, Run-in (short pre-surgery course) of endocrine-targeted therapy
Drug · Procedure · Other
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated May 14, 2018 · Synced Sep 5, 2026, 9:52 PM EDT