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Showing 1–24 of 26 matching trials from the live ClinicalTrials.gov search.
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Completed Phase 2 Interventional

Neoadjuvant Endocrine Therapy in ER-positive, HER2-negative Early Stage Breast Cancer

NCT05150652
View directory record Official record
Conditions
Breast Cancer, HER2-negative Breast Cancer, Node-negative Breast Cancer, Breast Carcinoma
Interventions
Anastrozole 1mg, Letrozole 2.5mg, Exemestane 25 mg, Tamoxifen
Drug
Lead sponsor
Irada Ibrahim-zada
Other
Eligibility
18 Years to 99 Years · Female only
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Aug 30, 2026 · Synced Sep 15, 2026, 5:56 AM EDT
Completed Phase 2 Interventional Results available

Treatment of Sexual Dysfunction in Hypogonadal Men With Epilepsy With Testosterone and Either Anastrozole or Placebo

NCT00179517
View directory record Official record
Conditions
Seizure Disorder, Hypogonadism, Erectile Dysfunction
Interventions
Anastrozole 1mg, Placebo Oral Tablet
Drug
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years to 50 Years · Male only
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2008
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 16, 2019 · Synced Sep 15, 2026, 5:56 AM EDT
Completed Not applicable Interventional Results available

Pre-Surgical Intervention for Targeted Therapies for Breast Cancer

NCT01004744
View directory record Official record
Conditions
Invasive Breast Cancer
Interventions
Anastrozole
Drug
Lead sponsor
Columbia University
Other
Eligibility
21 Years and older · Female only
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 10, 2021 · Synced Sep 15, 2026, 5:56 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 28, 2025 · Synced Sep 15, 2026, 5:56 AM EDT
Terminated Phase 2 Interventional Results available

Aromatase Inhibitor and Durvalumab in Postmenopausal Breast Cancer

NCT03874325
View directory record Official record
Conditions
Breast Cancer, Hormone Receptor Positive Tumor
Interventions
Durvalumab, Anastrozole 1mg, Letrozole 2.5mg, Exemestane 25 MG
Drug
Lead sponsor
H. Lee Moffitt Cancer Center and Research Institute
Other
Eligibility
18 Years and older · Female only
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated May 30, 2022 · Synced Sep 15, 2026, 5:56 AM EDT
Completed Phase 4 Interventional

Anastrozole Biphosphonate Study in Postmenopausal Women With Hormone-Receptor-Positive Early Breast Cancer

NCT00082277
View directory record Official record
Conditions
Breast Cancer
Interventions
Anastrozole, Risedronate Sodium
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
55 Years and older · Female only
Enrollment
237 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2007
U.S. locations
8
States / cities
Palm Springs, California • Jacksonville, Florida • New Orleans, Louisiana + 5 more
Source: ClinicalTrials.gov public record
Updated Jan 25, 2011 · Synced Sep 15, 2026, 5:56 AM EDT
Recruiting Not applicable Interventional

A Study of Changes in Ki67 Expression in People With Breast Cancer Receiving Endocrine Therapy Before Surgery

NCT06127979
View directory record Official record
Conditions
Breast Cancer
Interventions
core needle biopsy, blood draw
Procedure · Other
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older · Female only
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 1, 2026 · Synced Sep 15, 2026, 5:56 AM EDT
Completed Phase 3 Interventional Results available

A Global Study to Compare the Effects of Fulvestrant and Arimidex in a Subset of Patients With Breast Cancer.

NCT01602380
View directory record Official record
Conditions
Hormone Receptor Positive Breast Cancer
Interventions
faslodex 500mg, arimidex 1mg, faslodex dummy, arimidex dummy
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 130 Years · Female only
Enrollment
462 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2026
U.S. locations
12
States / cities
Modesto, California • Savannah, Georgia • Auburn, Maine + 9 more
Source: ClinicalTrials.gov public record
Updated Feb 26, 2026 · Synced Sep 15, 2026, 5:56 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Cardiovascular Outcomes of Low Testosterone

NCT02758431
View directory record Official record
Conditions
Hypogonadism
Interventions
Acyline, Placebo Gel, Placebo Tablet, Testosterone Gel, Arimidex
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 75 Years · Male only
Enrollment
232 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2023
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Oct 9, 2024 · Synced Sep 15, 2026, 5:56 AM EDT
Completed Phase 3 Interventional Results available

Aromatase Inhibitors, Alone And In Combination With Growth Hormone In Adolescent Boys With Idiopathic Short Stature

NCT01248416
View directory record Official record
Conditions
Idiopathic Short Stature
Interventions
Aromatase Inhibitor, Growth Hormone, Aromatase Inhibitor and Growth Hormone
Drug
Lead sponsor
Nemours Children's Clinic
Other
Eligibility
12 Years to 18 Years · Male only
Enrollment
76 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2016
U.S. locations
3
States / cities
Jacksonville, Florida • Orlando, Florida • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 6, 2018 · Synced Sep 15, 2026, 5:56 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Metabolic Effects of Steroids in Obese Men

NCT00983554
View directory record Official record
Conditions
Obesity, Insulin Resistance
Interventions
Anastrazole, Testosterone, Dutasteride, GnRH antagonist
Drug
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
24 Years to 51 Years · Male only
Enrollment
57 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2009
U.S. locations
2
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Mar 15, 2011 · Synced Sep 15, 2026, 5:56 AM EDT
Completed Phase 2 Interventional Results available

Endocrine Response in Women With Invasive Lobular Breast Cancer

NCT02206984
View directory record Official record
Conditions
Breast Cancer
Interventions
Tamoxifen, Anastrozole, Fulvestrant
Drug
Lead sponsor
Priscilla McAuliffe
Other
Eligibility
Female only
Enrollment
201 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2024
U.S. locations
12
States / cities
Birmingham, Alabama • San Francisco, California • Washington D.C., District of Columbia + 8 more
Source: ClinicalTrials.gov public record
Updated Aug 6, 2026 · Synced Sep 15, 2026, 5:56 AM EDT
Completed Phase 2 Interventional Results available

Anti-Hormone Therapy (With Anastrazole and Fulvestrant) Before Surgery to Treat Postmenopausal Women With Breast Cancer.

NCT00921115
View directory record Official record
Conditions
Invasive Breast Cancer
Interventions
Fulvestrant, Anastrazole
Drug
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
18 Years and older · Female only
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2023
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated May 18, 2023 · Synced Sep 15, 2026, 5:56 AM 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 25, 2026 · Synced Sep 15, 2026, 5:56 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Brain Blood Flow Responses to Stress: Sex Differences

NCT06253702
View directory record Official record
Conditions
Cerebrovascular Disorders
Interventions
Indomethacin, Placebo, Orilissa, Testosterone gel, Anastrozole, Estradiol
Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years to 40 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jul 17, 2025 · Synced Sep 15, 2026, 5:56 AM 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 18, 2013 · Synced Sep 15, 2026, 5:56 AM EDT
Completed Phase 4 Interventional

Aromatase Inhibitors and Weight Loss in Severely Obese Men With Hypogonadism

NCT03490513
View directory record Official record
Conditions
Hypogonadism, Hypogonadotropic, Obesity
Interventions
anastrozole (1 mg/day), Placebo
Drug
Lead sponsor
Baylor College of Medicine
Other
Eligibility
40 Years to 65 Years · Male only
Enrollment
121 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2025
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 6, 2025 · Synced Sep 15, 2026, 5:56 AM EDT
Completed Phase 2 Interventional Results available

Pulmonary Hypertension and Anastrozole Trial

NCT03229499
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Anastrozole, Placebo Oral Tablet
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
84 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
7
States / cities
Stanford, California • Aurora, Colorado • Baltimore, Maryland + 4 more
Source: ClinicalTrials.gov public record
Updated Apr 30, 2024 · Synced Sep 15, 2026, 5:56 AM EDT
Completed Phase 2 Interventional Results available

Study of Avastin (Bevacizumab) to Reverse Acquired Estrogen Independence in Previously Hormone Responsive Metastatic Breast Ca.

NCT00240071
View directory record Official record
Conditions
Metastatic Breast Cancer
Interventions
Avastin, Hormonal therapy
Drug
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
19 Years to 80 Years · Female only
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2011
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Oct 29, 2019 · Synced Sep 15, 2026, 5:56 AM EDT
Terminated Phase 2 Interventional Results available

1303GCC: Trastuzmab & Pertuzumab With Hormonal Therapy or Chemotherapy in Women Aged 60 and Over.

NCT02000596
View directory record Official record
Conditions
Metastatic Breast Cancer
Interventions
Trastuzumab plus Pertuzumab, Hormonal Therapy with Anastrozole and Fulvestrant, Chemotherapy with Eribulin
Drug
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
60 Years and older · Female only
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated May 26, 2022 · Synced Sep 15, 2026, 5:56 AM EDT
Completed Phase 1 Interventional

Gene Expression Following Short Term Exposure to Neoadjuvant Endocrine Therapy in Invasive Breast Cancer

NCT00588003
View directory record Official record
Conditions
Breast Cancer
Interventions
anastrozole, Placebo
Drug · Other
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
45 Years and older · Female only
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2009
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Dec 23, 2015 · Synced Sep 15, 2026, 5:56 AM EDT
Completed Phase 2 Interventional Results available

A Study of Onapristone ER Alone Or In Combination With Anastrozole in Gynecologic Cancers That Respond to Progesterone

NCT03909152
View directory record Official record
Conditions
Granulosa Cell Ovarian Cancer, Low Grade Serous Ovarian/ Primary Peritoneal Cancer, Endometrioid Endometrial Cancer
Interventions
Onapristone ER, Onapristone ER + Anastrozole
Drug
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older · Female only
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2024
U.S. locations
8
States / cities
Basking Ridge, New Jersey • Middletown, New Jersey • Montvale, New Jersey + 5 more
Source: ClinicalTrials.gov public record
Updated Jul 27, 2025 · Synced Sep 15, 2026, 5:56 AM 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 10, 2026 · Synced Sep 15, 2026, 5:56 AM EDT
Recruiting Phase 2 Interventional

Evaluating the Use of a Medication 'Switch' vs Guideline-directed Interventions for Relieving Side Effects of Aromatase Inhibitors Among Breast Cancer Patients

NCT07071038
View directory record Official record
Conditions
Breast Cancer, Adjuvant Treatment, Early Stage Breast Cancer
Interventions
Switch, Guideline Directed Intervention (GDI)
Drug · Other
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
18 Years and older
Enrollment
62 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Lebanon, New Hampshire
Source: ClinicalTrials.gov public record
Updated Feb 11, 2026 · Synced Sep 15, 2026, 5:56 AM EDT