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Showing 1–24 of 223 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Anastrozole Clear all
Recruiting Phase 2 Interventional

Molecular Analyses to Predict Pathways of Endocrine Resistance Following Short Term Neoadjuvant Endocrine Treatment in Patients With Hormone Receptor-Positive HER2-negative Breast Cancer

NCT06361940
View directory record Official record
Conditions
Breast Cancer
Interventions
Aromatase inhibitors or tamoxifen
Drug
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
18 Years and older · Female only
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 13, 2025 · Synced Sep 4, 2026, 12:18 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 4, 2026, 12:18 AM EDT
Recruiting Phase 2 Interventional

Abemaciclib for the Treatment of Recurrent Ovarian or Endometrial Cancer

NCT04469764
View directory record Official record
Conditions
Recurrent Endometrial Carcinoma, Recurrent Fallopian Tube Carcinoma, Recurrent Ovarian Carcinoma, Recurrent Primary Peritoneal Carcinoma
Interventions
Abemaciclib, Anastrozole, Letrozole
Drug
Lead sponsor
Jonsson Comprehensive Cancer Center
Other
Eligibility
Female only
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2028
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jul 16, 2026 · Synced Sep 4, 2026, 12:18 AM EDT
Recruiting Phase 1Phase 2 Interventional

First-in-Human Study of Tersolisib (STX-478) as Monotherapy and in Combination With Other Antineoplastic Agents in Participants With Advanced Solid Tumors

NCT05768139
View directory record Official record
Conditions
Breast Cancer, Solid Tumors, Adult
Interventions
STX-478, Fulvestrant, Ribociclib, Palbociclib, Letrozole, Anastrozole, Exemestane, Tamoxifen, Abemaciclib, Imlunestrant, Metformin
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
18 Years and older
Enrollment
880 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2030
U.S. locations
28
States / cities
Los Angeles, California • San Francisco, California • Aurora, Colorado + 22 more
Source: ClinicalTrials.gov public record
Updated Jul 6, 2026 · Synced Sep 4, 2026, 12:18 AM EDT
Recruiting Phase 1 Interventional

Reversing InGuinal Hernia Trial: The Evaluation of Sex Hormones to Reverse Inguinal Hernias in Males

NCT07604272
View directory record Official record
Conditions
Inguinal Hernia Unilateral, Inguinal Hernia Bilateral, Inguinal Hernia Without Obstruction or Gangrene, Inguinal Hernia, Without Mention of Obstruction or Gangrene
Interventions
Fulvestrant, Anastrozole (ARIMIDEX™)
Drug
Lead sponsor
Northwestern University
Other
Eligibility
50 Years and older · Male only
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Aug 2, 2026 · Synced Sep 4, 2026, 12:18 AM EDT
Completed Phase 2 Interventional Results available

A Study of Pertuzumab in Combination With Trastuzumab Plus an Aromatase Inhibitor in Participants With Metastatic Human Epidermal Growth Factor Receptor 2 (HER2)-Positive and Hormone Receptor-Positive Advanced Breast Cancer

NCT01491737
View directory record Official record
Conditions
Breast Cancer
Interventions
Pertuzumab, Trastuzumab, Aromatase Inhibitor, Induction Chemotherapy
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years and older · Female only
Enrollment
258 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2019
U.S. locations
21
States / cities
Birmingham, Alabama • Chandler, Arizona • Hot Springs, Arkansas + 17 more
Source: ClinicalTrials.gov public record
Updated Oct 27, 2020 · Synced Sep 4, 2026, 12:18 AM EDT
Completed Phase 2 Interventional Results available

Onapristone and Anastrozole for the Treatment of Refractory Hormone Receptor Positive Endometrial Cancer

NCT04719273
View directory record Official record
Conditions
Refractory Endometrial Adenocarcinoma, Refractory Endometrial Carcinoma, Refractory Endometrial Clear Cell Adenocarcinoma, Refractory Endometrial Endometrioid Adenocarcinoma, Refractory Endometrial Mixed Cell Adenocarcinoma, Refractory Endometrial Serous Adenocarcinoma, Refractory Endometrial Undifferentiated Carcinoma
Interventions
Extended-release Onapristone, Anastrozole, Quality-of-Life Assessment, Questionnaire Administration, Estrogen Receptor Positive (Positive Estrogen Receptor; ESR Positive; ESR1 Positive; ER Positive; Estrogen Receptor Alpha Positive), Progesterone Receptor Positive ( PGR Positive; PR Positive)
Drug · Other · Diagnostic Test
Lead sponsor
Thomas Jefferson University
Other
Eligibility
18 Years and older · Female only
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
2
States / cities
Abington, Pennsylvania • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 16, 2026 · Synced Sep 4, 2026, 12:18 AM EDT
Completed No phase listed Observational

Pharmacogenetics of Anastrozole in Postmenopausal Women With Estrogen Receptor-Positive and/or Progesterone Receptor-Positive Stage I, Stage II, or Stage III Breast Cancer

NCT00283608
View directory record Official record
Conditions
Breast Cancer
Interventions
Single nucleotide polymorphism (SNP), high performance liquid chromatography, measurements by DXA, questionnaire administration
Genetic · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older · Female only
Enrollment
1,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2010
U.S. locations
4
States / cities
Scottsdale, Arizona • Jacksonville, Florida • Rochester, Minnesota + 1 more
Source: ClinicalTrials.gov public record
Updated May 15, 2011 · Synced Sep 4, 2026, 12:18 AM EDT
Completed Phase 2 Interventional Results available

Neoadjuvant Endocrine Therapy in Hormone Receptor-Positive, Human Epidermal Growth Factor Receptor 2 (HER2)-Negative Node-Negative Breast Cancer

NCT03219476
View directory record Official record
Conditions
Breast Cancer, Invasive Breast Cancer
Interventions
Anastrozole, Letrozole, Exemestane, Tamoxifen
Drug
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
18 Years and older · Female only
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2025
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Apr 28, 2025 · Synced Sep 4, 2026, 12:18 AM EDT
Completed Phase 2 Interventional Results available

A Study for Safety and Effectiveness of IMC-A12 by Itself or Combined With Antiestrogens to Treat Breast Cancer

NCT00728949
View directory record Official record
Conditions
Metastatic Breast Cancer
Interventions
IMC-A12 (cixutumumab), tamoxifen, Anastrozole, Letrozole, Exemestane, Fulvestrant
Biological · Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
18 Years and older · Female only
Enrollment
93 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2015
U.S. locations
9
States / cities
Scottsdale, Arizona • Chicago, Illinois • Westwood, Kansas + 6 more
Source: ClinicalTrials.gov public record
Updated Jun 5, 2018 · Synced Sep 4, 2026, 12:18 AM EDT
Completed Phase 1Phase 2 Interventional Results available

Sorafenib and Anastrozole in Treating Postmenopausal Women With Metastatic Breast Cancer

NCT00217399
View directory record Official record
Conditions
Recurrent Breast Cancer, Stage IV Breast Cancer
Interventions
sorafenib tosylate, anastrozole
Drug
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older · Female only
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2013
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated May 27, 2014 · Synced Sep 4, 2026, 12:18 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 4, 2026, 12:18 AM EDT
Terminated Phase 3 Interventional Results available

Aromatase Inhibitors in the Treatment of Male Infertility

NCT00440180
View directory record Official record
Conditions
Obesity, Oligospermia
Interventions
Anastrozole, Placebo
Drug
Lead sponsor
University of Utah
Other
Eligibility
16 Years to 80 Years · Male only
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2014
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Apr 5, 2016 · Synced Sep 4, 2026, 12:18 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Testosterone-Driven Growth-Hormone (GH) Secretion in Aging Men

NCT00309855
View directory record Official record
Conditions
Aging
Interventions
Placebo, Testosterone, Anastrazole, Dutasteride
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
50 Years to 80 Years · Male only
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2008
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 30, 2012 · Synced Sep 4, 2026, 12:18 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Impact of Endogenous E2 on SSI and GH Rebound

NCT02026973
View directory record Official record
Conditions
Normal Healthy Volunteers
Interventions
Fulvestrant, Anastrozole, Placebo, Somatostatin
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
55 Years to 80 Years · Female only
Enrollment
62 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Mar 15, 2016 · Synced Sep 4, 2026, 12:18 AM EDT
Completed No phase listed Observational Results available

Study to Compare Overall Survival in Medicare Patients With Metastatic Breast Cancer Treated With a Medicine Called Palbociclib in Combination With Aromatase Inhibitor and Aromatase Inhibitor by Itself.

NCT06086340
View directory record Official record
Conditions
Breast Cancer
Interventions
Palbociclib, Aromatase Inhibitor
Drug
Lead sponsor
Pfizer
Industry
Eligibility
65 Years and older
Enrollment
779 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Nov 17, 2025 · Synced Sep 4, 2026, 12:18 AM EDT
Completed No phase listed Observational

Pilot Observational Study Examining the Effect of Endocrine Therapy on Aging

NCT05700006
View directory record Official record
Conditions
Breast Neoplasm Female, Arthralgia, Aging
Interventions
Aromatase inhibitor
Drug
Lead sponsor
University of Michigan
Other
Eligibility
18 Years and older · Female only
Enrollment
94 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Mar 4, 2026 · Synced Sep 4, 2026, 12:18 AM EDT
Active, not recruiting Phase 3 Interventional

OP-1250 (Palazestrant) vs. Standard of Care for the Treatment of ER+/HER2- Advanced Breast Cancer

NCT06016738
View directory record Official record
Conditions
Breast Cancer, Advanced Breast Cancer, Metastatic Breast Cancer, ER Positive Breast Cancer, HER2 Negative Breast Carcinoma
Interventions
Palazestrant, Fulvestrant, Anastrozole, Letrozole, Exemestane
Drug
Lead sponsor
Olema Pharmaceuticals, Inc.
Industry
Eligibility
18 Years and older
Enrollment
510 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
47
States / cities
Tucson, Arizona • Fountain Valley, California • Glendale, California + 39 more
Source: ClinicalTrials.gov public record
Updated Aug 12, 2026 · Synced Sep 4, 2026, 12:18 AM EDT
Completed Phase 1 Interventional

MK2206 in Combination With Anastrozole, Fulvestrant, or Anastrozole and Fulvestrant in Treating Postmenopausal Women With Metastatic Breast Cancer

NCT01344031
View directory record Official record
Conditions
Estrogen Receptor Positive, Invasive Breast Carcinoma, Recurrent Breast Carcinoma, Stage IV Breast Cancer AJCC v6 and v7
Interventions
Akt Inhibitor MK2206, Anastrozole, Fulvestrant, Laboratory Biomarker Analysis
Drug · Other
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older · Female only
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2011
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 22, 2018 · Synced Sep 4, 2026, 12:18 AM EDT
Completed Phase 2 Interventional Results available

Reversing Hormone Resistance in Advanced Breast Cancer With Pazopanib

NCT01466972
View directory record Official record
Conditions
Breast Cancer, Breast Neoplasm
Interventions
Pazopanib
Drug
Lead sponsor
Hope Rugo, MD
Other
Eligibility
18 Years and older · Female only
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2019
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jul 7, 2020 · Synced Sep 4, 2026, 12:18 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 4, 2026, 12:18 AM EDT
Active, not recruiting Phase 4 Interventional

Roll-over Study to Allow Continued Access to Ribociclib

NCT05161195
View directory record Official record
Conditions
Metastatic Breast Cancer
Interventions
Ribociclib, Letrozole, Anastrozole, Goserelin, Tamoxifen, Fulvestrant
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years to 100 Years
Enrollment
134 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2030
U.S. locations
16
States / cities
Chandler, Arizona • Fayetteville, Arkansas • Beverly Hills, California + 13 more
Source: ClinicalTrials.gov public record
Updated Jun 22, 2026 · Synced Sep 4, 2026, 12:18 AM EDT
Terminated Phase 2 Interventional Results available

Neo-adjuvant Therapy With Anastrozole Plus Pazopanib in Stage II and III ER+ Breast Cancer

NCT01394211
View directory record Official record
Conditions
Estrogen Receptor-positive Breast Cancer, Human Epidermal Growth Factor 2 Negative Carcinoma of Breast, Male Breast Cancer, Recurrent Breast Cancer, Stage II Breast Cancer, Stage IIIA Breast Cancer, Stage IIIB Breast Cancer
Interventions
anastrozole, pazopanib hydrochloride, therapeutic conventional surgery
Drug · Procedure
Lead sponsor
University of Arizona
Other
Eligibility
18 Years and older
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Jul 25, 2018 · Synced Sep 4, 2026, 12:18 AM EDT
Active, not recruiting Phase 1 Interventional

A Study of LY3484356 in Participants With Advanced or Metastatic Breast Cancer or Endometrial Cancer

NCT04188548
View directory record Official record
Conditions
Breast Cancer, Advanced Breast Cancer, Metastatic Breast Cancer, Endometrial Cancer
Interventions
LY3484356, Abemaciclib, Everolimus, Alpelisib, Trastuzumab, Aromatase Inhibitor (AI), Pertuzumab
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
18 Years and older
Enrollment
379 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2027
U.S. locations
42
States / cities
Gilbert, Arizona • Phoenix, Arizona • Springdale, Arkansas + 31 more
Source: ClinicalTrials.gov public record
Updated Jun 21, 2026 · Synced Sep 4, 2026, 12:18 AM EDT