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ClinicalTrials.gov public records Last synced Oct 7, 2026, 9:57 PM EDT

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Showing 25–48 of 93 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: anastrozole (1 mg/day) Clear all
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 29, 2025 · Synced Oct 7, 2026, 9:57 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 7, 2026, 9:57 PM EDT
Completed Phase 2 Interventional Results available

Anastrozole in Patients With Pulmonary Arterial Hypertension

NCT01545336
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Anastrozole, Placebo
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
3
States / cities
Philadelphia, Pennsylvania • Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Oct 27, 2016 · Synced Oct 7, 2026, 9:57 PM EDT
Recruiting Phase 2 Interventional

Trial of Pre-operative Neratinib and Endocrine Therapy With Trastuzumab in ER-Positive, HER-2 Positive Breast Cancers

NCT04886531
View directory record Official record
Conditions
Breast Cancer, HER2-positive Breast Cancer, ER Positive Breast Cancer, PR-Positive Breast Cancer
Interventions
Neratinib, Letrozole (L) or Anastrozole (A), Trastuzumab
Drug
Lead sponsor
Ruth O'Regan
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
4
States / cities
Chicago, Illinois • Rochester, New York • Hershey, Pennsylvania + 1 more
Source: ClinicalTrials.gov public record
Updated Sep 3, 2026 · Synced Oct 7, 2026, 9:57 PM 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 7, 2026, 9:57 PM EDT
Recruiting Phase 2 Interventional

Impact of Omitting Chemo Based on Patient's Selection for ER-Positive, HER2-Negative Breast Cancer With Ribociclib and Endocrine Therapy

NCT06953882
View directory record Official record
Conditions
HER2 Negative Breast Cancer
Interventions
Ribociclib 400mg, Letrozole 2.5mg, Anastrazole 1mg, Goserelin 3.6 MG, Adjuvant chemotherapy
Drug · Radiation
Lead sponsor
Yale University
Other
Eligibility
18 Years and older
Enrollment
140 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2030
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated May 26, 2026 · Synced Oct 7, 2026, 9:57 PM EDT
Completed Phase 2 Interventional Results available

Chemoprevention Trial - Anastrozole in Ductal Carcinoma In Situ (DCIS) in Postmenopausal Women

NCT00256217
View directory record Official record
Conditions
DCIS
Interventions
Anastrozole
Drug
Lead sponsor
Rita Sanghvi, Mehta
Other
Eligibility
18 Years and older · Female only
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2018
U.S. locations
1
States / cities
Orange, California
Source: ClinicalTrials.gov public record
Updated May 11, 2021 · Synced Oct 7, 2026, 9:57 PM EDT
Completed Phase 2 Interventional

Anastrozole in Treating Postmenopausal Women With DCIS or Stage I-III Breast Cancer

NCT00244959
View directory record Official record
Conditions
Breast Cancer
Interventions
anastrozole, adjuvant therapy
Drug · Procedure
Lead sponsor
Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins
Other
Eligibility
18 Years and older · Female only
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2011
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 19, 2013 · Synced Oct 7, 2026, 9:57 PM EDT
Active, not recruiting Phase 3 Interventional

A Comparative Study of AZD9833 Plus Palbociclib Versus Anastrozole Plus Palbociclib in Patients With ER-Positive HER2 Negative Breast Cancer Who Have Not Received Any Systemic Treatment for Advanced Disease

NCT04711252
View directory record Official record
Conditions
ER-Positive HER2-Negative Breast Cancer
Interventions
AZD9833, Anastrozole, Anastrozole placebo, AZD9833 placebo, Palbociclib, Luteinizing hormone-releasing hormone (LHRH) agonist
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 130 Years
Enrollment
1,371 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2029
U.S. locations
30
States / cities
Mobile, Alabama • Springdale, Arkansas • Harbor City, California + 25 more
Source: ClinicalTrials.gov public record
Updated Sep 28, 2026 · Synced Oct 7, 2026, 9:57 PM EDT
Suspended Not applicable Interventional

Insulin Sensitivity in Men With the Metabolic Syndrome

NCT00433173
View directory record Official record
Conditions
Metabolic Syndrome
Interventions
intravenous glucose tolerance test, testosterone, anastrozole, goserelin acetate implant, aerobic capacity (VO2 Max), MRI, muscle biopsy, measurement of resting metabolic rate (energy expenditure), Dual energy x-ray absorptiometry, Fasting oral glucose tolerance test
Procedure · Drug
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
50 Years to 75 Years · Male only
Enrollment
72 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2011
U.S. locations
2
States / cities
Baltimore, Maryland • Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 2, 2010 · Synced Oct 7, 2026, 9:57 PM EDT
Terminated Phase 2 Interventional Results available

Neoadj ph 2 AI Plus Everolimus in Postmenopausal Women w/ ER Pos/HER2 Neg, Low Risk Score

NCT02236572
View directory record Official record
Conditions
Breast Cancer
Interventions
Everolimus
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years and older · Female only
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2021
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Feb 1, 2022 · Synced Oct 7, 2026, 9:57 PM EDT
Completed Phase 3 Interventional Results available

Anastrozole or Tamoxifen in Treating Postmenopausal Women With Ductal Carcinoma in Situ Who Are Undergoing Lumpectomy and Radiation Therapy

NCT00053898
View directory record Official record
Conditions
Breast Cancer
Interventions
anastrozole, tamoxifen citrate, Radiation Therapy
Drug · Radiation
Lead sponsor
NSABP Foundation Inc
Network
Eligibility
Female only
Enrollment
3,104 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2016
U.S. locations
724
States / cities
Anniston, Alabama • Birmingham, Alabama • Huntsville, Alabama + 499 more
Source: ClinicalTrials.gov public record
Updated Sep 20, 2018 · Synced Oct 7, 2026, 9:57 PM EDT
Completed Phase 4 Interventional Results available

Rheumatological Evaluation of Anastrozole and Letrozole as Adjuvant Treatment in Post-menopausal Women With Breast Cancer

NCT00688909
View directory record Official record
Conditions
Breast Cancer
Interventions
letrozole
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
50 Years and older · Female only
Enrollment
261 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
48
States / cities
Huntsville, Alabama • Little Rock, Arkansas • Grass Valley, California + 43 more
Source: ClinicalTrials.gov public record
Updated Jun 9, 2021 · Synced Oct 7, 2026, 9:57 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 7, 2019 · Synced Oct 7, 2026, 9:57 PM EDT
Completed Phase 2 Interventional Results available

Study of 2 Ribociclib Doses in Combination With Aromatase Inhibitors in Women With HR+, HER2- Advanced Breast Cancer

NCT03822468
View directory record Official record
Conditions
Breast Cancer
Interventions
Ribociclib, Anastrozole, Letrozole, Goserelin
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years to 100 Years · Female only
Enrollment
376 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2024
U.S. locations
14
States / cities
Mobile, Alabama • Greenbrae, California • Longmont, Colorado + 11 more
Source: ClinicalTrials.gov public record
Updated Oct 16, 2025 · Synced Oct 7, 2026, 9:57 PM EDT
Active, not recruiting Phase 3 Interventional Results available

A Study of Nonsteroidal Aromatase Inhibitors Plus Abemaciclib (LY2835219) in Postmenopausal Women With Breast Cancer

NCT02246621
View directory record Official record
Conditions
Breast Cancer
Interventions
Abemaciclib, Anastrozole, Letrozole, Placebo
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
18 Years and older · Female only
Enrollment
493 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2026
U.S. locations
20
States / cities
Chandler, Arizona • Springdale, Arkansas • Bakersfield, California + 13 more
Source: ClinicalTrials.gov public record
Updated Feb 3, 2026 · Synced Oct 7, 2026, 9:57 PM EDT
Completed Phase 1 Interventional Results available

Safety Study of Enzalutamide (MDV3100) in Patients With Incurable Breast Cancer

NCT01597193
View directory record Official record
Conditions
Breast Cancer
Interventions
enzalutamide, anastrozole, exemestane, fulvestrant
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older · Female only
Enrollment
101 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2018
U.S. locations
17
States / cities
Aurora, Colorado • Enfield, Connecticut • Sarasota, Florida + 7 more
Source: ClinicalTrials.gov public record
Updated May 8, 2019 · Synced Oct 7, 2026, 9:57 PM EDT
Recruiting Phase 3 Interventional

A Study of Elacestrant Versus Standard Endocrine Therapy in Women and Men With ER+,HER2-, Early Breast Cancer With High Risk of Recurrence

NCT06492616
View directory record Official record
Conditions
Breast Cancer
Interventions
Elacestrant, Anastrozole, Letrozole, Exemestane, Tamoxifen
Drug
Lead sponsor
Stemline Therapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
4,220 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2032
U.S. locations
176
States / cities
Daphne, Alabama • Chandler, Arizona • Gilbert, Arizona + 139 more
Source: ClinicalTrials.gov public record
Updated Sep 15, 2026 · Synced Oct 7, 2026, 9:57 PM EDT
Recruiting Phase 3 Interventional

De-Escalation of Breast Radiation Trial for Hormone Sensitive, HER-2 Negative, Oncotype Recurrence Score Less Than or Equal to 18 Breast Cancer (DEBRA)

NCT04852887
View directory record Official record
Conditions
Stage I Breast Cancer
Interventions
Radiation and Endocrine Therapy (Tamoxifen, Anastrozol, Letrozole, Exemestane), Endocrine Therapy (Tamoxifen, Anastrozol, Letrozole, Exemestane)
Other · Drug
Lead sponsor
NRG Oncology
Other
Eligibility
50 Years to 70 Years
Enrollment
1,670 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2041
U.S. locations
812
States / cities
Birmingham, Alabama • Mobile, Alabama • Kingman, Arizona + 553 more
Source: ClinicalTrials.gov public record
Updated Apr 23, 2026 · Synced Oct 7, 2026, 9:57 PM EDT
Recruiting Phase 2 Interventional

Anastrazole, Fulvestrant & Abemaciclib for HR+HER2- Metastatic Breast Cancer

NCT05524584
View directory record Official record
Conditions
Breast Cancer, Metastatic Breast Cancer, Hormone Receptor-positive Breast Cancer, HER2-negative Breast Cancer
Interventions
Fulvestrant, Anastrozole, Abemaciclib
Drug
Lead sponsor
University of California, Irvine
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2031
U.S. locations
1
States / cities
Orange, California
Source: ClinicalTrials.gov public record
Updated Mar 11, 2026 · Synced Oct 7, 2026, 9:57 PM EDT
Active, not recruiting Phase 3 Interventional

Fulvestrant and/or Anastrozole in Treating Postmenopausal Patients With Stage II-III Breast Cancer Undergoing Surgery

NCT01953588
View directory record Official record
Conditions
Estrogen Receptor-positive Breast Cancer, HER2-negative Breast Cancer, Invasive Ductal Breast Carcinoma, Invasive Lobular Breast Carcinoma, Recurrent Breast Cancer, Stage II Breast Cancer, Stage IIIA Breast Cancer, Stage IIIB Breast Cancer, Stage IIIC Breast Cancer
Interventions
fulvestrant, anastrozole
Drug
Lead sponsor
Alliance for Clinical Trials in Oncology
Other
Eligibility
18 Years and older · Female only
Enrollment
1,473 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2027
U.S. locations
856
States / cities
Birmingham, Alabama • Mobile, Alabama • Anchorage, Alaska + 524 more
Source: ClinicalTrials.gov public record
Updated Jun 5, 2026 · Synced Oct 7, 2026, 9:57 PM EDT
Completed No phase listed Observational Results available

Pilot Study to Evaluate the Effect of Aromatase Inhibitor Therapy on Pain Threshold in Breast Cancer Patients

NCT01814397
View directory record Official record
Conditions
Breast Cancer, Pain, Arthralgia
Interventions
Anastrozole, exemestane, letrozole
Drug
Lead sponsor
University of Michigan Rogel Cancer Center
Other
Eligibility
21 Years and older · Female only
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Feb 7, 2024 · Synced Oct 7, 2026, 9:57 PM EDT
Completed Phase 1 Interventional Results available

This Study in Patients With Different Types of Cancer (Solid Tumours) Aims to Find a Safe Dose of Xentuzumab in Combination With Abemaciclib With or Without Hormonal Therapies. The Study Also Tests How Effective These Medicines Are in Patients With Lung and Breast Cancer

NCT03099174
View directory record Official record
Conditions
Neoplasms, Breast Neoplasms
Interventions
Xentuzumab, Abemaciclib, Letrozole, Anastrozole, Fulvestrant
Drug
Lead sponsor
Boehringer Ingelheim
Industry
Eligibility
18 Years and older
Enrollment
133 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2024
U.S. locations
6
States / cities
Santa Monica, California • New Haven, Connecticut • Miami, Florida + 3 more
Source: ClinicalTrials.gov public record
Updated Jun 24, 2025 · Synced Oct 7, 2026, 9:57 PM EDT
Terminated Not applicable Interventional Results available

GCC 1366: Anti-Proliferative Response to NeoAdjuvant AIs in Overweight and Obese Patients

NCT02095184
View directory record Official record
Conditions
Breast Cancer
Interventions
Anastrozole, Letrozole
Drug
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years and older · Female only
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2024
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 15, 2026 · Synced Oct 7, 2026, 9:57 PM EDT