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Showing 1–24 of 287 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Aromatase Inhibitor Clear all
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 10, 2026, 9:18 AM EDT
Terminated No phase listed Observational Results available

HR+/ HER2- Advanced/ Metastatic Breast Cancer Real World Treatment Patterns and Outcomes

NCT04396626
View directory record Official record
Conditions
Breast Cancer
Interventions
Not listed
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
975 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 26, 2023 · Synced Sep 10, 2026, 9:18 AM EDT
Completed Phase 2 Interventional

Safety/Efficacy of Q-122 in Breast Cancer Patients Taking Tamoxifen or Aromatase Inhibitor

NCT03518138
View directory record Official record
Conditions
Vasomotor Symptoms (VMS)
Interventions
Q-122, Placebo
Drug
Lead sponsor
Que Oncology
Industry
Eligibility
18 Years to 70 Years · Female only
Enrollment
132 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
6
States / cities
Woodstock, Georgia • Indianapolis, Indiana • Baltimore, Maryland + 3 more
Source: ClinicalTrials.gov public record
Updated Jul 22, 2021 · Synced Sep 10, 2026, 9:18 AM EDT
Terminated Phase 3 Interventional

Efficacy Evaluation of Enobosarm Monotherapy in Treatment of AR+/ER+/HER2- Metastatic Breast Cancer

NCT04869943
View directory record Official record
Conditions
Metastatic Breast Cancer
Interventions
Enobosarm, Exemestane
Drug
Lead sponsor
Veru Inc.
Industry
Eligibility
18 Years to 100 Years
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
34
States / cities
Chandler, Arizona • Gilbert, Arizona • Glendale, California + 29 more
Source: ClinicalTrials.gov public record
Updated Jan 25, 2024 · Synced Sep 10, 2026, 9:18 AM EDT
Terminated Phase 2 Interventional Results available

Evaluation of Biomarkers Associated With Response to Subsequent Therapies in Subjects With HER2-Positive Metastatic Breast Cancer

NCT02213042
View directory record Official record
Conditions
Neoplasms, Breast
Interventions
Lapatinib, Trastuzumab, Aromatase Inhibitors (AIs)
Drug · Biological
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years and older · Female only
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2020
U.S. locations
3
States / cities
Mobile, Alabama • Boston, Massachusetts • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Oct 12, 2021 · Synced Sep 10, 2026, 9:18 AM EDT
Terminated Phase 2 Interventional

Omega-3-Fatty Acid on Joint Symptoms Inducted by Aromatase Inhibitors

NCT00930527
View directory record Official record
Conditions
Breast Cancer
Interventions
Omega-3 Fatty Acid
Dietary Supplement
Lead sponsor
Columbia University
Other
Eligibility
21 Years and older · Female only
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 22, 2014 · Synced Sep 10, 2026, 9:18 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 10, 2026, 9:18 AM EDT
Recruiting Phase 1 Interventional

RADIANT: Pre-op Radiation With Abemaciclib and Letrozole

NCT06139107
View directory record Official record
Conditions
Breast Cancer
Interventions
Abemaciclib, Letrozole
Drug
Lead sponsor
Mridula George, MD
Other
Eligibility
60 Years and older · Female only
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2032
U.S. locations
4
States / cities
Belleville, New Jersey • Livingston, New Jersey • New Brunswick, New Jersey + 1 more
Source: ClinicalTrials.gov public record
Updated Nov 13, 2025 · Synced Sep 10, 2026, 9:18 AM EDT
Recruiting Phase 1 Interventional

Clinical Trial of Avasopasem in Patients With Metastatic Hormone Receptor Positive Breast Cancer With Progression on a CDK 4/6 Inhibitor and Hormonal Therapy

NCT07137871
View directory record Official record
Conditions
Breast Cancer Metastatic
Interventions
Avasopasem
Drug
Lead sponsor
The University of Texas Health Science Center at San Antonio
Other
Eligibility
18 Years and older
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Oct 30, 2025 · Synced Sep 10, 2026, 9:18 AM EDT
Completed Phase 2 Interventional Results available

Fulvestrant and Bevacizumab in Treating Patients With Metastatic Breast Cancer

NCT00423917
View directory record Official record
Conditions
Breast Cancer
Interventions
bevacizumab, fulvestrant
Biological · Drug
Lead sponsor
Alliance for Clinical Trials in Oncology
Other
Eligibility
18 Years and older
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2017
U.S. locations
205
States / cities
Scottsdale, Arizona • Hollywood, Florida • Jacksonville, Florida + 127 more
Source: ClinicalTrials.gov public record
Updated May 7, 2018 · Synced Sep 10, 2026, 9:18 AM EDT
Completed Phase 3 Interventional Results available

A Study of Trastuzumab Emtansine in Comparison With Treatment of Physician's Choice in Participants With HER2-positive Breast Cancer Who Have Received at Least Two Prior Regimens of HER2-directed Therapy

NCT01419197
View directory record Official record
Conditions
Breast Cancer
Interventions
Trastuzumab emtansine, Treatment of physician's choice
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years and older
Enrollment
602 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
59
States / cities
Tucson, Arizona • Hot Springs, Arkansas • Hayward, California + 52 more
Source: ClinicalTrials.gov public record
Updated Oct 11, 2016 · Synced Sep 10, 2026, 9:18 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 29, 2017 · Synced Sep 10, 2026, 9:18 AM 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 6, 2019 · Synced Sep 10, 2026, 9:18 AM EDT
Completed Not applicable Interventional Results available

Evaluation of Blood/Imaging Based Biomarkers, Aromatase Inhibitor Induced Musculoskeletal Syndrome

NCT03665077
View directory record Official record
Conditions
Aromatase Inhibitor Induced Musculoskeletal Syndrome (AIMSS), Breast Cancer
Interventions
Initial blood draw, Initial SWE ultrasound, Blood draw at three months, Blood draw at six months, SWE ultrasound at six months
Diagnostic Test
Lead sponsor
University of Arizona
Other
Eligibility
21 Years and older · Female only
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Aug 23, 2023 · Synced Sep 10, 2026, 9:18 AM EDT
Not yet recruiting Phase 2 Interventional

Randomized Double-Blind Phase II Trial of Baby Exemestane Versus Baby Tamoxifen in Post-Menopausal Women at High Risk for Breast Cancer

NCT07499999
View directory record Official record
Conditions
Breast Cancer, Ductal Carcinoma, Estrogen-receptor-positive Breast Cancer, Atypical Lobular Hyperplasia, BRCA2 Mutation, CHEK2 Gene Mutation, Ataxia Telangiectasia Mutated Gene Mutation
Interventions
Exemestane, Tamoxifen
Drug
Lead sponsor
Dana-Farber Cancer Institute
Other
Eligibility
Female only
Enrollment
140 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 29, 2026 · Synced Sep 10, 2026, 9:18 AM EDT
Completed Phase 2 Interventional Results available

Vitamin D3 for Aromatase Inhibitor Induced Arthralgias

NCT00867217
View directory record Official record
Conditions
Breast Cancer
Interventions
High Dose Vitamin D, Placebo, Standard Dose Vitamin D3, Letrozole 2.5mg
Dietary Supplement · Drug
Lead sponsor
Qamar Khan
Other
Eligibility
18 Years and older · Female only
Enrollment
160 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
2
States / cities
Westwood, Kansas • Wichita, Kansas
Source: ClinicalTrials.gov public record
Updated Feb 8, 2018 · Synced Sep 10, 2026, 9:18 AM EDT
Completed Phase 2 Interventional Results available

Doxorubicin and Cyclophosphamide Followed by Paclitaxel, Trastuzumab, and Lapatinib in Treating Patients With HER2/Neu-Overexpressed Breast Cancer

NCT00482391
View directory record Official record
Conditions
Breast Cancer
Interventions
trastuzumab, cyclophosphamide, doxorubicin hydrochloride, lapatinib ditosylate, paclitaxel, laboratory biomarker analysis
Biological · Drug · Other
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years to 120 Years
Enrollment
95 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
2
States / cities
Boston, Massachusetts • New York, New York
Source: ClinicalTrials.gov public record
Updated May 11, 2017 · Synced Sep 10, 2026, 9:18 AM 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 2, 2026 · Synced Sep 10, 2026, 9:18 AM EDT
Not listed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Letrozole Treatment in Normal and GnRH Deficient Women

NCT00351416
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Letrozole, NAL-GLU GnRH antagonist
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2004
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 26, 2017 · Synced Sep 10, 2026, 9:18 AM EDT
Terminated Phase 2 Interventional Results available

Vaginal Dehydroepiandrosterone (DHEA) in Postmenopausal Breast Cancer Survivors on Aromatase Inhibitors

NCT04493333
View directory record Official record
Conditions
Vaginal Atrophy, Postmenopausal Symptoms, Breast Cancer Female, Long-term Survivors
Interventions
Vaginal Dehydroepiandrosterone, Vaginal Polycarbophil Moisturizer
Drug · Combination Product
Lead sponsor
University of Arkansas
Other
Eligibility
18 Years to 70 Years · Female only
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Little Rock, Arkansas
Source: ClinicalTrials.gov public record
Updated Nov 26, 2024 · Synced Sep 10, 2026, 9:18 AM EDT
Completed Not applicable Interventional Results available

Zoledronate in Treating Osteopenia or Osteoporosis in Postmenopausal Women Receiving Letrozole for Stage I, Stage II, or Stage IIIA Primary Breast Cancer

NCT00436917
View directory record Official record
Conditions
Breast Cancer, Osteoporosis
Interventions
zoledronic acid, Letrozole as adjuvant therapy
Drug · Procedure
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 120 Years · Female only
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2016
U.S. locations
2
States / cities
Jacksonville, Florida • Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Sep 10, 2019 · Synced Sep 10, 2026, 9:18 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 2, 2016 · Synced Sep 10, 2026, 9:18 AM EDT
Completed Phase 2 Interventional Results available

Randomized Trial of Fulvestrant With or Without Dasatinib in Men and Postmenopausal Women Who Have Hormone Receptor-positive Advanced Breast Cancer Previously Treated With an Aromatase Inhibitor

NCT00754325
View directory record Official record
Conditions
Advanced Breast Cancer
Interventions
Dasatinib, Fulvestrant
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2014
U.S. locations
28
States / cities
Sedona, Arizona • Tucson, Arizona • Hudson, Florida + 22 more
Source: ClinicalTrials.gov public record
Updated May 25, 2016 · Synced Sep 10, 2026, 9:18 AM EDT
Completed Phase 2 Interventional Results available

Study Assessing the Efficacy and Safety of Alpelisib Plus Fulvestrant or Letrozole, Based on Prior Endocrine Therapy, in Patients With PIK3CA Mutant, HR+, HER2- Advanced Breast Cancer Who Have Progressed on or After Prior Treatments

NCT03056755
View directory record Official record
Conditions
Breast Cancer
Interventions
Alpelisib, Fulvestrant, Letrozole, Goserelin, Leuprolide
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years to 99 Years
Enrollment
383 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2024
U.S. locations
25
States / cities
Gilbert, Arizona • Phoenix, Arizona • Anaheim, California + 20 more
Source: ClinicalTrials.gov public record
Updated Jan 12, 2026 · Synced Sep 10, 2026, 9:18 AM EDT