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ClinicalTrials.gov public records Last synced Jul 21, 2026, 8:52 PM EDT

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Showing 1–20 of 20 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Post Menopausal, Hormone Receptor Positive Breast Cancer Clear all
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 Jul 21, 2026, 8:52 PM EDT
Completed Phase 1 Interventional

PhIb BKM120 or BEZ235+Endocrine Treatment in Post-Menopausal Patients With Hormone Receptor + Metastatic Breast Cancer

NCT01248494
View directory record Official record
Conditions
Metastatic Breast Cancer
Interventions
BEZ235, BKM 120, Letrozole, BKM120
Drug
Lead sponsor
Vanderbilt-Ingram Cancer Center
Other
Eligibility
18 Years and older
Enrollment
72 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2016
U.S. locations
6
States / cities
Birmingham, Alabama • Boston, Massachusetts • New York, New York + 1 more
Source: ClinicalTrials.gov public record
Updated Jul 24, 2016 · Synced Jul 21, 2026, 8:52 PM EDT
Completed Phase 1 Interventional

A Phase 1b Study of TAK-700 in Postmenopausal Women With Hormone-receptor Positive Metastatic Breast Cancer

NCT01808040
View directory record Official record
Conditions
Post Menopausal, Hormone Receptor Positive Breast Cancer
Interventions
TAK700
Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older · Female only
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Nov 17, 2019 · Synced Jul 21, 2026, 8:52 PM EDT
Terminated Phase 2 Interventional Results available

PhII Neo-Adjuvant Letrozole & Lapatinib in Pts w/HER2+ & Hormone Receptor+ Operable Breast CA SPORE

NCT00499681
View directory record Official record
Conditions
Breast Cancer
Interventions
lapatinib ditosylate, letrozole, placebo
Drug · Other
Lead sponsor
Vanderbilt-Ingram Cancer Center
Other
Eligibility
18 Years and older · Female only
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
4
States / cities
Boston, Massachusetts • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Aug 9, 2012 · Synced Jul 21, 2026, 8:52 PM EDT
Terminated Early Phase 1 Interventional

Letrozole in Treating Postmenopausal Women With Stage I, II or III Breast Cancer That Can Be Removed by Surgery

NCT00651976
View directory record Official record
Conditions
Breast Cancer
Interventions
letrozole, Blood Collection, biopsy/lumpectomy/mastectomy
Drug · Other · Procedure
Lead sponsor
Vanderbilt-Ingram Cancer Center
Other
Eligibility
18 Years and older · Female only
Enrollment
213 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2018
U.S. locations
5
States / cities
Atlanta, Georgia • Tulsa, Oklahoma • Pittsburgh, Pennsylvania + 1 more
Source: ClinicalTrials.gov public record
Updated Oct 14, 2018 · Synced Jul 21, 2026, 8:52 PM EDT
Completed Phase 2 Interventional Results available

Open-label, Phase II Study of Stomatitis Prevention With a Steroid-based Mouthwash in Post-menopausal Women With Estrogen-receptor-positive (ER+), Human Epidermal Growth Factor Receptor 2 (HER2)- Metastatic or Locally Advanced Breast Cancer

NCT02069093
View directory record Official record
Conditions
Advanced Breast Cancer
Interventions
Dexamethasone based mouthwash, Everolimus, Exemestane
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years and older · Female only
Enrollment
92 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
23
States / cities
Fayetteville, Arkansas • Anaheim, California • Los Angeles, California + 17 more
Source: ClinicalTrials.gov public record
Updated Feb 12, 2017 · Synced Jul 21, 2026, 8:52 PM EDT
No Longer Available No phase listed Expanded access

Expanded Access Study Of Palbociclib (PD-0332991) In Combination With Letrozole As Treatment Of Post-Menopausal Women With HR-Positive, Her2-Negative Advanced Breast Cancer For Whom Letrozole Therapy Is Deemed Appropriate

NCT02142868
View directory record Official record
Conditions
Advanced Breast Cancer (Female)
Interventions
Palbociclib, Letrozole
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older · Female only
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
44
States / cities
Bakersfield, California • Washington D.C., District of Columbia • Duluth, Georgia + 30 more
Source: ClinicalTrials.gov public record
Updated Dec 20, 2018 · Synced Jul 21, 2026, 8:52 PM EDT
Completed Phase 1Phase 2 Interventional Results available

Phase I/II Trial of Letrozole and Sorafenib in Post-Menopausal Hormone-Receptor + Breast Cancer

NCT00634634
View directory record Official record
Conditions
Metastatic Breast Cancer
Interventions
Sorafenib, Letrozole
Drug
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
18 Years and older · Female only
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2023
U.S. locations
4
States / cities
Washington D.C., District of Columbia • Atlanta, Georgia • New Brunswick, New Jersey + 1 more
Source: ClinicalTrials.gov public record
Updated Nov 8, 2023 · Synced Jul 21, 2026, 8:52 PM EDT
Terminated Phase 2 Interventional Results available

Study of Anastrozole +/- AZD8931 in Postmenopausal Women With Endocrine Therapy Naive Breast Cancer

NCT01151215
View directory record Official record
Conditions
Neoplasms, Breast Neoplasms, Breast Cancer
Interventions
AZD8931, anastrozole, Placebo
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years and older · Female only
Enrollment
482 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
1
States / cities
Lake Success, New York
Source: ClinicalTrials.gov public record
Updated Jul 24, 2014 · Synced Jul 21, 2026, 8:52 PM EDT
Completed Phase 2 Interventional Results available

Randomized Phase II Trial of Letrozole With or Without Dasatinib as First and Second-line Treatment for Hormone Receptor-positive, HER2-negative Post-menopausal Breast Cancer That is Unresectable, Locally Recurrent or Metastatic

NCT00696072
View directory record Official record
Conditions
Metastatic Breast Cancer
Interventions
Dasatinib, Letrozole
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years and older · Female only
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2014
U.S. locations
27
States / cities
Sedona, Arizona • Tucson, Arizona • Denver, Colorado + 22 more
Source: ClinicalTrials.gov public record
Updated Jun 12, 2016 · Synced Jul 21, 2026, 8:52 PM EDT
Terminated Phase 2 Interventional

PTK and Letrozole in Post-menopausal Women With Advanced Breast Cancer

NCT00263198
View directory record Official record
Conditions
Breast Neoplasms
Interventions
PTK787/ZK222584, Letrozole
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older · Female only
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated May 6, 2013 · Synced Jul 21, 2026, 8:52 PM EDT
Active, not recruiting Phase 2 Interventional

Clinical Trial Assessing the Safety of Neoadjuvant Palbociclib in Combination With Endocrine Therapy

NCT05069038
View directory record Official record
Conditions
Breast Cancer
Interventions
Palbociclib 125mg
Drug
Lead sponsor
University of Nebraska
Other
Eligibility
19 Years and older · Female only
Enrollment
51 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2032
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Dec 21, 2025 · Synced Jul 21, 2026, 8:52 PM EDT
Active, not recruiting Phase 1 Interventional

BYL719 and Letrozole in Post-Menopausal Patients With Hormone Receptor-Positive Metastatic Breast Cancer

NCT01791478
View directory record Official record
Conditions
Estrogen Receptor-positive Breast Cancer, HER2-negative Breast Cancer, Invasive Ductal Breast Carcinoma, Progesterone Receptor-positive Breast Cancer, Recurrent Breast Cancer, Stage IV Breast Cancer
Interventions
PI3K inhibitor BYL719, letrozole, laboratory biomarker analysis, pharmacological studies
Drug · Other
Lead sponsor
Vanderbilt-Ingram Cancer Center
Other
Eligibility
18 Years and older · Female only
Enrollment
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2025
U.S. locations
2
States / cities
Boston, Massachusetts • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jul 22, 2024 · Synced Jul 21, 2026, 8:52 PM EDT
Completed Phase 2 Interventional Results available

A Study to Learn About the Study Medicine PF-07220060 Together With Letrozole Compared to Letrozole Alone in Women Post Menopause

NCT06465368
View directory record Official record
Conditions
Breast Cancer
Interventions
PF-07220060, letrozole
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older · Female only
Enrollment
121 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
10
States / cities
Barrington, Illinois • Crystal Lake, Illinois • Park Ridge, Illinois + 2 more
Source: ClinicalTrials.gov public record
Updated Jul 14, 2026 · Synced Jul 21, 2026, 8:52 PM EDT
Completed Phase 2 Interventional Results available

Study of Fulvestrant +/- Everolimus in Post-Menopausal, Hormone-Receptor + Metastatic Breast Ca Resistant to AI

NCT01797120
View directory record Official record
Conditions
Metastatic Breast Cancer
Interventions
Fulvestrant, Everolimus, Placebo
Drug
Lead sponsor
PrECOG, LLC.
Other
Eligibility
18 Years and older
Enrollment
131 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2017
U.S. locations
25
States / cities
Greenbrae, California • Stanford, California • Rockford, Illinois + 21 more
Source: ClinicalTrials.gov public record
Updated May 29, 2018 · Synced Jul 21, 2026, 8:52 PM EDT
Completed Phase 3 Interventional Results available

Palbociclib (PD-0332991) Combined With Fulvestrant In Hormone Receptor+ HER2-Negative Metastatic Breast Cancer After Endocrine Failure (PALOMA-3)

NCT01942135
View directory record Official record
Conditions
Metastatic Breast Cancer
Interventions
Palbociclib, Fulvestrant, Placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older · Female only
Enrollment
521 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2022
U.S. locations
134
States / cities
Birmingham, Alabama • Daphne, Alabama • Mobile, Alabama + 90 more
Source: ClinicalTrials.gov public record
Updated Apr 3, 2024 · Synced Jul 21, 2026, 8:52 PM EDT
Terminated Phase 1 Interventional

RO4929097 and Letrozole in Treating Post-Menopausal Women With Hormone Receptor-Positive Stage II or Stage III Breast Cancer

NCT01208441
View directory record Official record
Conditions
Estrogen Receptor-positive Breast Cancer, HER2-negative Breast Cancer, Progesterone Receptor-positive Breast Cancer, Stage II Breast Cancer, Stage IIIA Breast Cancer
Interventions
letrozole, gamma-secretase/Notch signalling pathway inhibitor RO4929097, therapeutic conventional surgery, breast biopsy, diagnostic laboratory biomarker analysis, pharmacological study
Drug · Procedure · Other
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older · Female only
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2010
U.S. locations
3
States / cities
Birmingham, Alabama • Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 29, 2013 · Synced Jul 21, 2026, 8:52 PM EDT
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 28, 2025 · Synced Jul 21, 2026, 8:52 PM EDT
Completed Not applicable Interventional Results available

Pilot Study Estradiol Followed by Exemestane Hormone Receptor + Metastatic Breast Cancer

NCT01385280
View directory record Official record
Conditions
Estrogen Receptor-positive Breast Cancer, Progesterone Receptor Positive Tumor, Recurrent Breast Cancer, Stage IIIC Breast Cancer, Stage IV Breast Cancer
Interventions
therapeutic estradiol, exemestane, laboratory biomarker analysis, enzyme-linked immunosorbent assay
Biological · Drug · Other
Lead sponsor
University of Arizona
Other
Eligibility
Female only
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Oct 16, 2018 · Synced Jul 21, 2026, 8:52 PM 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 Jul 21, 2026, 8:52 PM EDT