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ClinicalTrials.gov public records Last synced Sep 17, 2026, 10:26 AM EDT

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Showing 1–24 of 35 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Endocrine Therapy (ET) Clear all
Recruiting Phase 3 Interventional

A Study to Evaluate the Efficacy and Safety of Inavolisib in Combination With Phesgo Versus Placebo in Combination With Phesgo in Participants With PIK3CA-Mutated HER2-Positive Locally Advanced or Metastatic Breast Cancer

NCT05894239
View directory record Official record
Conditions
Metastatic Breast Cancer
Interventions
Inavolisib, Phesgo, Placebo, Taxane-based Chemotherapy, Optional Endocrine Therapy of Investigator's Choice
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years and older
Enrollment
230 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2032
U.S. locations
20
States / cities
Gilbert, Arizona • Burbank, California • Corona, California + 17 more
Source: ClinicalTrials.gov public record
Updated Aug 24, 2026 · Synced Sep 17, 2026, 10:26 AM EDT
Completed Not applicable Interventional

Patient Reported Outcomes, Smart Pill Bottle and Teleheath for Endocrine Therapy Adherence

NCT04054557
View directory record Official record
Conditions
Stage 0 Breast Cancer AJCC v6 and v7, Stage I Breast Cancer AJCC v7, Stage IA Breast Cancer AJCC v7, Stage IB Breast Cancer AJCC v7, Stage II Breast Cancer AJCC v6 and v7, Stage IIA Breast Cancer AJCC v6 and v7, Stage IIB Breast Cancer AJCC v6 and v7, Stage IIIA Breast Cancer AJCC v7, Stage IIIB Breast Cancer AJCC v7, Stage IIIC Breast Cancer AJCC v7, Stage III Breast Cancer AJCC v7
Interventions
Telemedicine, Best Practice, Questionnaire Administration, Quality-of-Life Assessment, Survey Administration, Behavioral Intervention, Educational Intervention
Other · Behavioral
Lead sponsor
Thomas Jefferson University
Other
Eligibility
18 Years and older
Enrollment
305 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2024
U.S. locations
5
States / cities
Washington Township, New Jersey • Philadelphia, Pennsylvania • Torresdale, Pennsylvania + 1 more
Source: ClinicalTrials.gov public record
Updated Feb 4, 2026 · Synced Sep 17, 2026, 10:26 AM EDT
Recruiting Phase 2 Interventional

ETHAN - ET for Male BC

NCT05501704
View directory record Official record
Conditions
Male Breast Cancer, Hormone Receptor-positive Breast Cancer, Hormone Receptor Negative Breast Carcinoma
Interventions
Tamoxifen, Anastrozole, Degarelix, Abemaciclib
Drug
Lead sponsor
Jose Pablo Leone
Other
Eligibility
18 Years and older · Male only
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2036
U.S. locations
9
States / cities
Washington D.C., District of Columbia • Jacksonville, Florida • Boston, Massachusetts + 6 more
Source: ClinicalTrials.gov public record
Updated Aug 23, 2026 · Synced Sep 17, 2026, 10:26 AM EDT
Completed No phase listed Observational

A Real-world Study of Indian Patients With Advanced Breast Cancer Treated With Ribociclib

NCT07363434
View directory record Official record
Conditions
Breast Cancer
Interventions
Not listed
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years and older · Female only
Enrollment
335 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
East Hanover, New Jersey
Source: ClinicalTrials.gov public record
Updated Jan 22, 2026 · Synced Sep 17, 2026, 10:26 AM EDT
Recruiting No phase listed Observational

Longitudinal Tumor Burden Quantification Using Circulating Tumor DNA in Metastatic Lobular Breast Cancer

NCT06666439
View directory record Official record
Conditions
Metastatic Invasive Lobular Carcinoma (mILC)
Interventions
circulating tumor DNA (ctDNA)
Diagnostic Test
Lead sponsor
Julia Foldi
Other
Eligibility
18 Years and older · Female only
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 19, 2026 · Synced Sep 17, 2026, 10:26 AM EDT
Active, not recruiting Not applicable Interventional

Monitoring Symptoms to Help Young Women Take Hormone Therapy for Stage I-III Breast Cancer, ASPEN Study

NCT05568472
View directory record Official record
Conditions
Anatomic Stage I Breast Cancer AJCC v8, Anatomic Stage II Breast Cancer AJCC v8, Anatomic Stage III Breast Cancer AJCC v8, Hormone Receptor-Positive Breast Carcinoma
Interventions
Best Practice, Biospecimen Collection, Endocrine Drug Therapy, Health Education, Questionnaire Administration, Symptom Specific Assessment Tool
Other · Procedure · Behavioral
Lead sponsor
SWOG Cancer Research Network
Network
Eligibility
18 Years and older · Female only
Enrollment
565 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
489
States / cities
Kingman, Arizona • Phoenix, Arizona • Antioch, California + 333 more
Source: ClinicalTrials.gov public record
Updated Apr 1, 2026 · Synced Sep 17, 2026, 10:26 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Adaptive Preventive Intervention for College Alcohol Use

NCT03930524
View directory record Official record
Conditions
College Student Drinking
Interventions
Personalized Normative Feedback (PNF), Self-Monitoring (SM), Web-BASICS, Health Promotion Consultation, M-Bridge Online Health Coach
Behavioral
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 21 Years
Enrollment
891 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2022
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 11, 2023 · Synced Sep 17, 2026, 10:26 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Comparison of Hormonal Therapy: Mediating Hot Flashes Tapering Regimens for Mediating Hot Flashes

NCT00547001
View directory record Official record
Conditions
Hot Flashes, Night Sweats
Interventions
Estradiol
Drug
Lead sponsor
Hartford Hospital
Other
Eligibility
35 Years to 70 Years · Female only
Enrollment
235 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2009
U.S. locations
1
States / cities
Hartford, Connecticut
Source: ClinicalTrials.gov public record
Updated Jul 17, 2008 · Synced Sep 17, 2026, 10:26 AM EDT
Completed Phase 3 Interventional Results available

Study of Nivolumab Versus Placebo in Combination With Neoadjuvant Chemotherapy and Adjuvant Endocrine Therapy in Participants With High-risk, Estrogen Receptor-Positive (ER+), Human Epidermal Growth Factor Receptor 2-Negative (HER2-) Primary Breast Cancer

NCT04109066
View directory record Official record
Conditions
Breast Cancer
Interventions
nivolumab, paclitaxel (PTX), nivolumab placebo, anthracycline, cyclophosphamide, Endocrine Therapy, Surgery
Biological · Drug · Other + 1 more
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years and older
Enrollment
521 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
30
States / cities
Mobile, Alabama • Greenbrae, California • Whittier, California + 27 more
Source: ClinicalTrials.gov public record
Updated Jan 7, 2025 · Synced Sep 17, 2026, 10:26 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 17, 2026, 10:26 AM EDT
Recruiting Phase 3 Interventional

Saruparib (AZD5305) Plus Camizestrant or Plus Endocrine Therapy, Compared With CDK4/6 Inhibitor Plus Endocrine Therapy or Plus Camizestrant in HR-Positive, HER2-Negative (IHC 0, 1+, 2+/ ISH Non-amplified), BRCA1, BRCA2, or PALB2m Advanced Breast Cancer

NCT06380751
View directory record Official record
Conditions
Advanced Breast Cancer
Interventions
Saruparib (AZD5305), Camizestrant, Abemaciclib, Ribociclib, Palbociclib, Fulvestrant, Letrozole, Anastrozole, Exemestane
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years and older
Enrollment
788 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2031
U.S. locations
57
States / cities
Gilbert, Arizona • Fountain Valley, California • Glendale, California + 49 more
Source: ClinicalTrials.gov public record
Updated Sep 1, 2026 · Synced Sep 17, 2026, 10:26 AM EDT
Recruiting Phase 2 Interventional

A Vaccine (STEMVAC) With Standard Endocrine-Based Therapy or Chemotherapy for the Treatment of Metastatic Hormone Receptor Positive, HER2 Negative Breast Cancer

NCT07112053
View directory record Official record
Conditions
Anatomic Stage IV Breast Cancer AJCC v8, Metastatic HER2-Negative Breast Carcinoma, Metastatic Hormone Receptor-Positive Breast Carcinoma
Interventions
CD105/Yb-1/SOX2/CDH3/MDM2-polyepitope Plasmid DNA Vaccine, Capecitabine, Computed Tomography, Cyclin-Dependent Kinase 4 Inhibitor, Cyclin-Dependent Kinase 6 Inhibitor, F-18 16 Alpha-Fluoroestradiol, Hormone Therapy, Positron Emission Tomography, Biopsy Procedure, Biospecimen Collection, Abemaciclib
Biological · Drug · Procedure
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Apr 5, 2026 · Synced Sep 17, 2026, 10:26 AM EDT
Active, not recruiting Phase 2 Interventional

Determinants of Resistance to Endocrine Therapy and a Cyclin-dependent Kinases 4 and 6 (CDK4/6) Inhibitor for HR+ MBC

NCT03439735
View directory record Official record
Conditions
Breast Cancer
Interventions
Endocrine Therapy and a CDK 4/6 inhibitor
Drug
Lead sponsor
Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins
Other
Eligibility
18 Years to 100 Years
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2027
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 6, 2026 · Synced Sep 17, 2026, 10:26 AM EDT
Active, not recruiting Phase 3 Interventional

A Trial to Evaluate Efficacy and Safety of Ribociclib With Endocrine Therapy as Adjuvant Treatment in Patients With HR+/HER2- Early Breast Cancer

NCT03701334
View directory record Official record
Conditions
Early Breast Cancer
Interventions
Ribociclib, Endocrine Therapy (ET)
Drug · Other
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years to 100 Years
Enrollment
5,101 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2030
U.S. locations
73
States / cities
Birmingham, Alabama • Goodyear, Arizona • Jonesboro, Arkansas + 68 more
Source: ClinicalTrials.gov public record
Updated Aug 17, 2026 · Synced Sep 17, 2026, 10:26 AM EDT
Completed No phase listed Observational

A Study of Real-world Outcomes Among Patients Treated With Ribociclib

NCT07148505
View directory record Official record
Conditions
Metastatic Breast Cancer
Interventions
Not listed
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
373 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024
U.S. locations
1
States / cities
East Hanover, New Jersey
Source: ClinicalTrials.gov public record
Updated Aug 28, 2025 · Synced Sep 17, 2026, 10:26 AM EDT
Terminated Phase 1Phase 2 Interventional Results available

A Study of PF-06873600 in People With Cancer

NCT03519178
View directory record Official record
Conditions
HR+ HER2- Metastatic Breast Cancer, Ovarian Cancer, Fallopian Tube Cancer, Primary Peritoneal Cancer, Triple Negative Breast Cancer, Male Breast Cancer
Interventions
PF-06873600, Endocrine Therapy 1, Endocrine Therapy 2
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
155 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2024
U.S. locations
39
States / cities
Birmingham, Alabama • Scottsdale, Arizona • Fayetteville, Arkansas + 22 more
Source: ClinicalTrials.gov public record
Updated Nov 13, 2025 · Synced Sep 17, 2026, 10:26 AM EDT
Recruiting Phase 1 Interventional

Study of AMG 509 in Participants With Metastatic Castration-Resistant Prostate Cancer

NCT04221542
View directory record Official record
Conditions
Prostate Cancer
Interventions
AMG 509, Abiraterone, Enzalutamide
Drug
Lead sponsor
Amgen
Industry
Eligibility
18 Years and older · Male only
Enrollment
479 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2032
U.S. locations
25
States / cities
Duarte, California • Fullerton, California • San Francisco, California + 22 more
Source: ClinicalTrials.gov public record
Updated Aug 20, 2026 · Synced Sep 17, 2026, 10:26 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 17, 2026, 10:26 AM EDT
Recruiting Phase 3 Interventional

A Study to Learn About the Study Medicine Called PF-07248144 in Combination With Fulvestrant in People With HR-positive, HER2-negative Advanced or Metastatic Breast Cancer Who Progressed After a Prior Line of Treatment.

NCT07062965
View directory record Official record
Conditions
Breast Cancer
Interventions
PF-07248144, Fulvestrant, Everolimus, Exemestane
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2030
U.S. locations
102
States / cities
Chandler, Arizona • Gilbert, Arizona • Glendale, Arizona + 85 more
Source: ClinicalTrials.gov public record
Updated May 5, 2026 · Synced Sep 17, 2026, 10:26 AM EDT
Recruiting Phase 1 Interventional

A Study With NKT5097 for Adults With Advanced/Metastatic Solid Tumors

NCT07029399
View directory record Official record
Conditions
HR+ Breast Cancer, Triple Negative Breast Cancer (TNBC), CCNE1 Amplified Advanced Solid Tumors, HR+ HER2- Breast Cancer
Interventions
NKT5097 CDK2/CDK4 dual degrader, Fulvestrant, Letrozole
Drug
Lead sponsor
NiKang Therapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
361 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
18
States / cities
Duarte, California • La Jolla, California • Denver, Colorado + 15 more
Source: ClinicalTrials.gov public record
Updated Aug 27, 2026 · Synced Sep 17, 2026, 10:26 AM EDT
Completed No phase listed Observational

Characterization of Circulating Tumor Cells (CTC) From Patients With Metastatic Breast Cancer Using the CTC-Endocrine Therapy Index

NCT01701050
View directory record Official record
Conditions
Metastatic Breast Cancer
Interventions
Blood collection
Other
Lead sponsor
Janssen Diagnostics, LLC
Industry
Eligibility
18 Years and older · Female only
Enrollment
121 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
18
States / cities
Phoenix, Arizona • Fort Myers, Florida • St. Petersburg, Florida + 14 more
Source: ClinicalTrials.gov public record
Updated Mar 7, 2017 · Synced Sep 17, 2026, 10:26 AM EDT
Terminated Phase 3 Interventional Results available

A Study of Abemaciclib (LY2835219) Plus Hormone Therapy in Participants With Early Breast Cancer

NCT04752332
View directory record Official record
Conditions
Breast Neoplasms
Interventions
Abemaciclib, Standard Adjuvant ET, Placebo
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
18 Years and older
Enrollment
111 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
13
States / cities
Glendale, Arizona • Los Angeles, California • Hollywood, Florida + 7 more
Source: ClinicalTrials.gov public record
Updated Jul 14, 2025 · Synced Sep 17, 2026, 10:26 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 17, 2026, 10:26 AM EDT
Recruiting Phase 3 Interventional

A Study of Tersolisib (LY4064809/STX-478) With Other Anti-Cancer Treatments in Participants With Advanced Breast Cancer With a Genetic Change (PIK3CA)

NCT07174336
View directory record Official record
Conditions
Breast Neoplasms, Neoplasm Metastasis
Interventions
LY4064809, Placebo, Ribociclib, Palbociclib, Abemaciclib, Anastrozole, Letrozole, Exemestane, Fulvestrant
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
18 Years and older
Enrollment
800 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2033
U.S. locations
127
States / cities
Anchorage, Alaska • Chandler, Arizona • Phoenix, Arizona + 109 more
Source: ClinicalTrials.gov public record
Updated Sep 7, 2026 · Synced Sep 17, 2026, 10:26 AM EDT