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ClinicalTrials.gov public records Last synced Oct 8, 2026, 9:28 AM EDT

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Showing 169–192 of 290 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Aromatase Inhibitors Clear all
Completed Phase 3 Interventional

Phase III Study of Atamestane Plus Toremifene Versus Letrozole in Advanced Breast Cancer

NCT00044291
View directory record Official record
Conditions
Breast Neoplasms, Neoplasms, Hormone-dependent
Interventions
atamestane, toremifene, letrozole, aromatase inhibition, hormone therapy, endocrine therapy, antiestrogen therapy
Drug · Procedure
Lead sponsor
Intarcia Therapeutics
Industry
Eligibility
18 Years and older · Female only
Enrollment
865 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2006
U.S. locations
17
States / cities
Lake Havasu City, Arizona • Tucson, Arizona • Greenbrae, California + 14 more
Source: ClinicalTrials.gov public record
Updated Jul 31, 2015 · Synced Oct 8, 2026, 9:28 AM EDT
Recruiting Phase 2 Interventional

Solifenacin Compared to Clonidine for Reducing Hot Flashes Among Breast Cancer Patients

NCT01530373
View directory record Official record
Conditions
Hot Flashes, Breast Cancer
Interventions
solifenacin, Clonidine
Drug
Lead sponsor
University of Arkansas
Other
Eligibility
18 Years and older · Female only
Enrollment
110 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2028
U.S. locations
1
States / cities
Little Rock, Arkansas
Source: ClinicalTrials.gov public record
Updated Mar 5, 2026 · Synced Oct 8, 2026, 9:28 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Oral Health in Breast Cancer Survivors on Aromatase Inhibitors

NCT01693731
View directory record Official record
Conditions
Periodontal Disease, Quality of Life
Interventions
Not listed
Lead sponsor
University of Michigan
Other
Eligibility
Female only
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2015
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated May 20, 2015 · Synced Oct 8, 2026, 9:28 AM EDT
Withdrawn Phase 4 Interventional

A Study of Abemaciclib (LY2835219) in Participants With HR+, HER2- Advanced Breast Cancer

NCT03988114
View directory record Official record
Conditions
Metastatic Breast Cancer
Interventions
Abemaciclib, Nonsteroidal Aromatase Inhibitor (NSAI)
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
70
States / cities
Daphne, Alabama • Tempe, Arizona • Fountain Valley, California + 60 more
Source: ClinicalTrials.gov public record
Updated Sep 6, 2019 · Synced Oct 8, 2026, 9:28 AM EDT
Recruiting Phase 2 Interventional

Fulvestrant+Abemaciclib With Run-In of Fulvestrant in Er-Positive, Her2-Negative Metastatic Breast Cancer

NCT05305924
View directory record Official record
Conditions
ER-Positive Breast Cancer, HER2-negative Breast Cancer
Interventions
Fulvestrant Run-In
Drug
Lead sponsor
The Methodist Hospital Research Institute
Other
Eligibility
18 Years and older
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2027
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 28, 2026 · Synced Oct 8, 2026, 9:28 AM EDT
Withdrawn Phase 1 Interventional

Neoadjuvant Run-In Study With TAK-228 Followed by Letrozole/TAK-228 in Women With High-Risk ER+/HER2- Breast Cancer

NCT02619669
View directory record Official record
Conditions
Breast Cancer
Interventions
TAK-228, Letrozole
Drug
Lead sponsor
Gary Schwartz
Other
Eligibility
18 Years and older · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Lebanon, New Hampshire
Source: ClinicalTrials.gov public record
Updated Mar 12, 2020 · Synced Oct 8, 2026, 9:28 AM EDT
Active, not recruiting Phase 1 Interventional

AKT Inhibitor, Ipatasertib, With Endocrine and CDK 4/6 Inhibitor for Patients With Metastatic Breast Cancer (TAKTIC)

NCT03959891
View directory record Official record
Conditions
Breast Cancer
Interventions
Ipatasertib, Fulvestrant, Aromatase Inhibitor, Palbociclib
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older · Female only
Enrollment
77 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2027
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 19, 2026 · Synced Oct 8, 2026, 9:28 AM EDT
Completed No phase listed Observational

Aromatase Inhibitor-Associated Musculoskeletal Symptoms in Non-Metastatic, Post Menopausal Breast Cancer Patients

NCT01051609
View directory record Official record
Conditions
Breast Cancer
Interventions
History and Physical Exam, Grip Strength Measurement, Surveys, Blood Collection, Ultrasound of Hand/Wrist
Other · Behavioral · Procedure
Lead sponsor
Jonsson Comprehensive Cancer Center
Other
Eligibility
18 Years and older · Female only
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2010
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Sep 9, 2016 · Synced Oct 8, 2026, 9:28 AM EDT
Terminated Phase 2 Interventional Results available

Goserelin and Letrozole or Anastrozole in Premenopausal Patients With Stage II-III Estrogen Receptor-Positive Breast Cancer

NCT01368263
View directory record Official record
Conditions
Estrogen Receptor-positive Breast Cancer, HER2-negative Breast Cancer, Stage II Breast Cancer, Stage IIIA Breast Cancer, Stage IIIB Breast Cancer, Stage IIIC Breast Cancer
Interventions
goserelin acetate, letrozole, anastrozole, chemotherapy, Surgery
Drug · Procedure
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older · Female only
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Apr 3, 2015 · Synced Oct 8, 2026, 9:28 AM EDT
Terminated Phase 2 Interventional

Study of AFP464 +/- Faslodex in ER + Breast Cancer

NCT01233947
View directory record Official record
Conditions
Breast Neoplasm
Interventions
AFP464, AFP464 + Faslodex
Drug
Lead sponsor
Tigris Pharmaceuticals
Industry
Eligibility
18 Years and older · Female only
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Jan 9, 2012 · Synced Oct 8, 2026, 9:28 AM EDT
Completed Not applicable Interventional Results available

Letrozole as a Treatment of Endometrial Cancer

NCT00997373
View directory record Official record
Conditions
Endometrial Carcinoma
Interventions
Letrozole
Drug
Lead sponsor
University of California, Davis
Other
Eligibility
40 Years and older · Female only
Enrollment
43 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
2
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated May 30, 2017 · Synced Oct 8, 2026, 9:28 AM EDT
Completed Not applicable Interventional Results available

Vorinostat in Treating Patients With Stage IV Breast Cancer Receiving Hormone Therapy

NCT01720602
View directory record Official record
Conditions
Male Breast Cancer, Recurrent Breast Cancer, Stage IV Breast Cancer
Interventions
vorinostat, anastrozole, letrozole, exemestane, positron emission tomography, F-18 16 alpha-fluoroestradiol, fludeoxyglucose F 18, laboratory biomarker analysis
Drug · Procedure · Radiation + 1 more
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2020
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jan 7, 2020 · Synced Oct 8, 2026, 9:28 AM EDT
Completed Phase 2 Interventional Results available

Paclitaxel, Cyclophosphamide & Doxorubicin, Autologous Dendritic Cells & Surgery in Stage II/III Breast Cancer (Women)

NCT00499083
View directory record Official record
Conditions
Breast Cancer
Interventions
therapeutic autologous dendritic cells, aromatase inhibition therapy, cyclophosphamide, doxorubicin hydrochloride, paclitaxel, tamoxifen citrate, gene expression analysis, protein expression analysis, reverse transcriptase-polymerase chain reaction, immunoenzyme technique, immunohistochemistry staining method, laboratory biomarker analysis, adjuvant therapy, biopsy, conventional surgery, neoadjuvant therapy, radiation therapy
Biological · Drug · Genetic + 3 more
Lead sponsor
University of Nebraska
Other
Eligibility
19 Years to 120 Years · Female only
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2010
U.S. locations
2
States / cities
Tampa, Florida • Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Sep 29, 2023 · Synced Oct 8, 2026, 9:28 AM EDT
Active, not recruiting Phase 2 Interventional

Alpelisib (BYL719) in Combination With Continued Endocrine Therapy Following Progression on Endocrine Therapy in Hormone Receptor Positive, HER2 Negative, PIK3CA Mutant Metastatic Breast Cancer

NCT04762979
View directory record Official record
Conditions
Hormone Receptor Positive Breast Carcinoma, HER2-negative Breast Cancer, PIK3CA Mutant Metastatic Breast Cancer
Interventions
Alpelisib, Fulvestrant, Aromatase inhibitor
Drug
Lead sponsor
Marina N Sharifi
Other
Eligibility
18 Years and older
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
4
States / cities
Chicago, Illinois • Omaha, Nebraska • Hershey, Pennsylvania + 1 more
Source: ClinicalTrials.gov public record
Updated Jan 2, 2026 · Synced Oct 8, 2026, 9:28 AM EDT
Completed Phase 1Phase 2 Interventional

Study of XL147 (SAR245408) or XL765 (SAR245409) in Combination With Letrozole in Subjects With Breast Cancer

NCT01082068
View directory record Official record
Conditions
Breast Cancer
Interventions
XL147 (SAR245408), XL765 (SAR245409), letrozole (Femara)
Drug
Lead sponsor
Sanofi
Industry
Eligibility
18 Years and older · Female only
Enrollment
72 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
11
States / cities
Los Angeles, California • Denver, Colorado • Fort Meyers, Florida + 8 more
Source: ClinicalTrials.gov public record
Updated Jun 3, 2016 · Synced Oct 8, 2026, 9:28 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 22, 2026 · Synced Oct 8, 2026, 9:28 AM EDT
Completed Phase 2 Interventional Results available

Zoledronic Acid in Aromatase Inhibitor Induced Musculoskeletal Symptoms

NCT01194440
View directory record Official record
Conditions
Ductal Carcinoma in Situ, Estrogen Receptor-positive Breast Cancer, Progesterone Receptor-positive Breast Cancer, Stage I Breast Cancer, Stage II Breast Cancer, Stage IIIA Breast Cancer, Stage IIIB Breast Cancer, Stage IIIC Breast Cancer
Interventions
letrozole, zoledronic acid
Drug
Lead sponsor
Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins
Other
Eligibility
18 Years and older · Female only
Enrollment
63 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 12, 2018 · Synced Oct 8, 2026, 9:28 AM 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 8, 2026, 9:28 AM EDT
Terminated Phase 2 Interventional Results available

High Dose Vitamin D vs Standard Dose Vitamin D Study

NCT01988090
View directory record Official record
Conditions
Breast Cancer
Interventions
800 IU Vitamin D Supplement, 50,000 IU Vitamin D supplement
Drug
Lead sponsor
Mothaffar Rimawi
Other
Eligibility
18 Years and older · Female only
Enrollment
93 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2018
U.S. locations
2
States / cities
St Louis, Missouri • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 9, 2021 · Synced Oct 8, 2026, 9:28 AM EDT
Completed Not applicable Interventional

Pilot Study of a an App to Improve Medication Adherence in Breast Cancer Survivors Receiving AIs

NCT04170920
View directory record Official record
Conditions
Breast Cancer, DCIS
Interventions
LifeExtend-AI
Device
Lead sponsor
Indiana University
Other
Eligibility
18 Years and older
Enrollment
62 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Sep 14, 2022 · Synced Oct 8, 2026, 9:28 AM EDT
Terminated Phase 3 Interventional

The CAT Study: Atamestane Plus Toremifene Versus Letrozole in Advanced Breast Cancer

NCT00097344
View directory record Official record
Conditions
Breast Neoplasms, Neoplasms, Hormone-Dependent
Interventions
Atamestane, Toremifene, Letrozole, Aromatase inhibition, Estrogen receptor blocker, Hormone therapy, Endocrine therapy, Antiestrogen therapy
Drug · Procedure
Lead sponsor
Intarcia Therapeutics
Industry
Eligibility
18 Years and older · Female only
Enrollment
842 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
49
States / cities
Mobile, Alabama • Tuscon, Arizona • Hot Springs, Arkansas + 46 more
Source: ClinicalTrials.gov public record
Updated Aug 23, 2007 · Synced Oct 8, 2026, 9:28 AM EDT
Completed Phase 2 Interventional Results available

Cannabidiol (CBD) for Treatment of Aromatase Inhibitor-Associated Arthralgias

NCT04754399
View directory record Official record
Conditions
Arthralgia, Breast Cancer
Interventions
Cannabidiol (CBD)
Drug
Lead sponsor
University of Michigan Rogel Cancer Center
Other
Eligibility
18 Years and older · Female only
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated May 9, 2025 · Synced Oct 8, 2026, 9:28 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 7, 2018 · Synced Oct 8, 2026, 9:28 AM EDT
Active, not recruiting Phase 2 Interventional Results available

Letrozole Plus Ribociclib or Placebo as Neo-adjuvant Therapy in ER-positive, HER2-negative Early Breast Cancer

NCT02712723
View directory record Official record
Conditions
Breast Cancer
Interventions
Letrozole, Ribociclib, Placebo
Drug
Lead sponsor
Qamar Khan
Other
Eligibility
18 Years and older · Female only
Enrollment
121 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2026
U.S. locations
13
States / cities
Little Rock, Arkansas • Duarte, California • Santa Ana, California + 9 more
Source: ClinicalTrials.gov public record
Updated Mar 11, 2026 · Synced Oct 8, 2026, 9:28 AM EDT