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Showing 1–24 of 293 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Aromatase Inhibition Therapy Clear all
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 27, 2026, 3:23 AM EDT
Terminated Phase 2 Interventional Results available

Phase 2 Study of Amcenestrant (SAR439859) Versus Physician's Choice in Locally Advanced or Metastatic ER-positive Breast Cancer

NCT04059484
View directory record Official record
Conditions
Breast Cancer Metastatic
Interventions
Amcenestrant, Fulvestrant, Anastrozole, Letrozole, Exemestane, Tamoxifen
Drug
Lead sponsor
Sanofi
Industry
Eligibility
18 Years and older
Enrollment
367 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2025
U.S. locations
14
States / cities
Birmingham, Alabama • Bakersfield, California • Santa Monica, California + 11 more
Source: ClinicalTrials.gov public record
Updated Feb 23, 2026 · Synced Sep 27, 2026, 3:23 AM EDT
Recruiting Phase 2 Interventional

NeoTAILOR: ABiomarker-directed Approach to Guide Neoadjuvant Therapy for Patients With Stage II/III ER-positive, HER2-negative Breast Cancer

NCT05837455
View directory record Official record
Conditions
Breast Cancer, Cancer of the Breast
Interventions
VENTANA MIB-1 Ki67 assay, Oncotype DX® Recurrence Score, PAM50-based Prosigna breast cancer gene signature assay, Anastrozole, Combination anthracycline and/or taxane based treatment
Device · Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older · Female only
Enrollment
81 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Apr 12, 2026 · Synced Sep 27, 2026, 3:23 AM EDT
Completed Not applicable Interventional

Tai Chi for Relieving Aromatase Inhibitor-Induced Arthralgia in Patients With Stage I-III Breast Cancer, the TaiChi4Joint Trial

NCT04716920
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, 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
Tai Chi, FitBit, Support Group Therapy, Questionnaire Administration, Quality-of-Life Assessment
Other · Device
Lead sponsor
Thomas Jefferson University
Other
Eligibility
18 Years and older · Female only
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 28, 2025 · Synced Sep 27, 2026, 3:23 AM EDT
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 Aug 31, 2026 · Synced Sep 27, 2026, 3:23 AM EDT
Terminated Phase 1Phase 2 Interventional Results available

Ph I/II of Vitamin D on Bone Mineral Density & Markers of Bone Resorption

NCT00904423
View directory record Official record
Conditions
Breast Cancer, Bone Diseases
Interventions
Vitamin D
Drug
Lead sponsor
Mark Pegram
Other
Eligibility
18 Years to 85 Years · Female only
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Feb 13, 2017 · Synced Sep 27, 2026, 3:23 AM EDT
Completed Not applicable Interventional Results available

Flaxseed, Aromatase Inhibitors and Breast Tumor Characteristics

NCT00612560
View directory record Official record
Conditions
Breast Cancer
Interventions
Anastrozole, flaxseed, Placebo
Drug · Dietary Supplement
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
18 Years to 85 Years · Female only
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2014
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Oct 11, 2017 · Synced Sep 27, 2026, 3:23 AM EDT
Completed No phase listed Observational

Effects of Aromatase Inhibitor Therapy on Muscle Function

NCT03581552
View directory record Official record
Conditions
Breast Cancer, Breast Cancer Female
Interventions
Not listed
Lead sponsor
Tarah J Ballinger, MD
Other
Eligibility
18 Years and older · Female only
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated May 9, 2021 · Synced Sep 27, 2026, 3:23 AM EDT
Completed Phase 2 Interventional Results available

Bay98-7196, Dose Finding / POC Study

NCT02203331
View directory record Official record
Conditions
Endometriosis
Interventions
Placebo, Levonorgestrel, Anastrozole, Lupron / Leuprolide acetate
Drug
Lead sponsor
Bayer
Industry
Eligibility
18 Years and older · Female only
Enrollment
319 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
25
States / cities
San Diego, California • San Francisco, California • Gainesville, Florida + 22 more
Source: ClinicalTrials.gov public record
Updated Nov 6, 2023 · Synced Sep 27, 2026, 3:23 AM EDT
Completed Phase 2 Interventional

Preventing Sexual Dysfunction With Aromatase Inhibitors

NCT01603303
View directory record Official record
Conditions
Breast Cancer
Interventions
Questionnaires, Education Materials, Luvena, Hyalo-Gyn, Vaginal Lubricant, Interactive Internet-Based Website, Telephone Counseling.
Behavioral · Other
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older · Female only
Enrollment
187 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2017
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 17, 2017 · Synced Sep 27, 2026, 3:23 AM EDT
Completed Phase 3 Interventional

Doxorubicin Hydrochloride, Cyclophosphamide, and Pacltaxel With or Without Trastuzumab in Treating Women With HER2-Positive Node-Positive or High-Risk Node-Negative Breast Cancer

NCT00005970
View directory record Official record
Conditions
Breast Adenocarcinoma, HER2 Positive Breast Carcinoma, Stage IA Breast Cancer AJCC v7, Stage IB Breast Cancer AJCC v7, Stage IIA Breast Cancer AJCC v6 and v7, Stage IIB Breast Cancer AJCC v6 and v7, Stage IIIA Breast Cancer AJCC v7
Interventions
Aromatase Inhibition Therapy, Cyclophosphamide, Doxorubicin Hydrochloride, Laboratory Biomarker Analysis, Paclitaxel, Tamoxifen Citrate, Trastuzumab
Drug · Other · Biological
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older · Female only
Enrollment
3,436 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2010
U.S. locations
154
States / cities
Birmingham, Alabama • Phoenix, Arizona • Scottsdale, Arizona + 119 more
Source: ClinicalTrials.gov public record
Updated Aug 13, 2020 · Synced Sep 27, 2026, 3:23 AM EDT
Completed Phase 2Phase 3 Interventional

Arimidex Multicenter Trial in Growth Hormone (GH) Deficient Boys

NCT00133354
View directory record Official record
Conditions
Hypopituitarism
Interventions
Arimidex (Anastrozole), Placebo, Growth Hormone
Drug
Lead sponsor
Nemours Children's Clinic
Other
Eligibility
11 Years to 18 Years · Male only
Enrollment
53 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2010
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Oct 11, 2011 · Synced Sep 27, 2026, 3:23 AM EDT
Recruiting Phase 2 Interventional

ALPINE: Maintenance Letrozole/Abemaciclib

NCT06366347
View directory record Official record
Conditions
Endometrial Cancer, Recurrent Endometrial Cancer, TP53
Interventions
Abemaciclib, Letrozole, Pembrolizumab
Drug
Lead sponsor
Dana-Farber Cancer Institute
Other
Eligibility
18 Years and older
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
6
States / cities
Boston, Massachusetts • Foxborough, Massachusetts • Milford, Massachusetts + 1 more
Source: ClinicalTrials.gov public record
Updated Sep 15, 2026 · Synced Sep 27, 2026, 3:23 AM EDT
Not yet recruiting Phase 4 Interventional

Semaglutide and Structured Lifestyle Support to Improve Heart and Blood Vessel Health in Postmenopausal Obese Breast Cancer Survivors Taking Aromatase Inhibitors

NCT07769047
View directory record Official record
Conditions
Anatomic Stage I Breast Cancer AJCC v8, Anatomic Stage II Breast Cancer AJCC v8, Anatomic Stage III Breast Cancer AJCC v8
Interventions
Biospecimen Collection, Dual X-ray Absorptiometry, Functional Assessment, Lifestyle Counseling, Semaglutide
Procedure · Other · Behavioral + 1 more
Lead sponsor
Mayo Clinic
Other
Eligibility
46 Years to 55 Years · Female only
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2035
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Aug 16, 2026 · Synced Sep 27, 2026, 3:23 AM EDT
Terminated Not applicable Interventional

The CEASE Study: Computer Based Educational Module for the Reduction of Arthralgia Syndrome Associated With Endocrine Therapy for Breast Cancer

NCT01351844
View directory record Official record
Conditions
Breast Cancer, Arthralgia
Interventions
Education and exercise intervention, Education and General Exercise
Behavioral
Lead sponsor
George Washington University
Other
Eligibility
18 Years and older · Female only
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Aug 29, 2017 · Synced Sep 27, 2026, 3:23 AM 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 27, 2026, 3:23 AM EDT
Completed Not applicable Interventional

Writing Interventions in Breast Cancer Patients Taking Aromatase Inhibitors

NCT04651452
View directory record Official record
Conditions
Breast Cancer
Interventions
Value Affirmation, Reflective Journaling
Behavioral
Lead sponsor
Carnegie Mellon University
Other
Eligibility
18 Years and older · Female only
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 21, 2026 · Synced Sep 27, 2026, 3:23 AM 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 27, 2026, 3:23 AM 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 27, 2026, 3:23 AM 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 27, 2026, 3:23 AM 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 27, 2026, 3:23 AM 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 27, 2026, 3:23 AM EDT
Completed No phase listed Observational Results available

Real-world Treatment Patterns and Effectiveness of Palbociclib and AI Therapy

NCT04176354
View directory record Official record
Conditions
Metastatic Breast Cancer
Interventions
Palbociclib + an aromatase inhibitor, Palbociclib + Letrozole, Letrozole
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older · Female only
Enrollment
813 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 22, 2024 · Synced Sep 27, 2026, 3:23 AM EDT
Completed No phase listed Observational

TREATMENT AND MONITORING PATTERNS AND CLINICAL OUTCOMES IN PATIENTS RECEIVING PALBOCICLIB COMBINATION TREATMENT (WITH AI OR FULVESTRANT) FOR HR+/HER2- A/MBC IN A COMMUNITY ONCOLOGY SETTING.

NCT04498481
View directory record Official record
Conditions
Breast Cancer
Interventions
Not listed
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older · Female only
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 26, 2026 · Synced Sep 27, 2026, 3:23 AM EDT