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ClinicalTrials.gov public records Last synced Oct 23, 2026, 9:02 PM EDT

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Showing 145–168 of 1,358 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: HER2- Breast Cancer Clear all
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 31, 2025 · Synced Oct 23, 2026, 9:02 PM EDT
Active, not recruiting Phase 1 Interventional

Safety and Immune Response to a Mammaglobin-A DNA Vaccine In Breast Cancer Patients Undergoing Neoadjuvant Endocrine Therapy

NCT02204098
View directory record Official record
Conditions
Breast Cancer, Breast Carcinoma, Malignant Neoplasm of Breast
Interventions
Mammaglobin-A DNA Vaccine, Optional biopsy
Biological · Procedure
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older · Female only
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2028
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Apr 21, 2026 · Synced Oct 23, 2026, 9:02 PM EDT
Active, not recruiting No phase listed Observational

Real-World Treatment Patterns and Outcomes in HER2-Altered Metastatic Breast Cancer Patients in the United States

NCT07342309
View directory record Official record
Conditions
Metastatic Breast Cancer
Interventions
Not listed
Lead sponsor
Boehringer Ingelheim
Industry
Eligibility
18 Years and older
Enrollment
7,933 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Ridgefield, Connecticut
Source: ClinicalTrials.gov public record
Updated Jul 14, 2026 · Synced Oct 23, 2026, 9:02 PM EDT
Active, not recruiting Phase 1Phase 2 Interventional

CFI-402257, a Potent and Selective TTK Inhibitor, in Solid Tumors and With Fulvestrant in Breast Cancer

NCT05251714
View directory record Official record
Conditions
Advanced Solid Tumor, Breast Cancer
Interventions
CFI-402257, Fulvestrant
Drug
Lead sponsor
Treadwell Therapeutics, Inc
Industry
Eligibility
18 Years and older
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
4
States / cities
Columbus, Ohio • San Antonio, Texas • West Valley City, Utah + 1 more
Source: ClinicalTrials.gov public record
Updated May 18, 2025 · Synced Oct 23, 2026, 9:02 PM EDT
Active, not recruiting Phase 2 Interventional

A Phase 2 Study of T-DXd in Patients With Selected HER2 Expressing Tumors

NCT04482309
View directory record Official record
Conditions
Part 1: Bladder, Biliary Tract, Cervical, Endometrial, Ovarian, Pancreatic Cancer, Rare Tumors, Any Tumor Type Excluding Breast, Gastric, Colorectal Cancer, Part 2: HER2 Expressing/Amplified Solid Tumors Excluding Breast, Gastric, Colorectal Cancer
Interventions
Trastuzumab deruxtecan
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 120 Years
Enrollment
477 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2027
U.S. locations
12
States / cities
Duarte, California • Santa Rosa, California • Chicago, Illinois + 8 more
Source: ClinicalTrials.gov public record
Updated Jul 10, 2026 · Synced Oct 23, 2026, 9:02 PM EDT
Completed Phase 1 Interventional

Ph 1 ADI-PEG 20 Plus Doxorubicin; Patients With HER2 Negative Metastatic Breast Cancer

NCT01948843
View directory record Official record
Conditions
HER2 Negative Metastatic Breast Cancer
Interventions
ADI-PEG 20
Drug
Lead sponsor
Polaris Group
Industry
Eligibility
18 Years and older · Female only
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 14, 2016 · Synced Oct 23, 2026, 9:02 PM EDT
Completed Phase 1 Interventional

A Dose-escalation Study to Assess the Safety, Tolerability, and Pharmacokinetics of GDC-0032 in Combination With Docetaxel or With Paclitaxel in Patients With HER2-negative Locally Recurrent or Metastatic Breast Cancer or Non-small Cell Lung Cancer

NCT01862081
View directory record Official record
Conditions
Breast Cancer, Non-small Lung Cancer
Interventions
Docetaxel, GDC-0032, Paclitaxel
Drug
Lead sponsor
Genentech, Inc.
Industry
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2017
U.S. locations
10
States / cities
Tampa, Florida • Boston, Massachusetts • Detroit, Michigan + 5 more
Source: ClinicalTrials.gov public record
Updated Nov 28, 2017 · Synced Oct 23, 2026, 9:02 PM EDT
Recruiting Phase 3 Interventional

De-Escalation of Breast Radiation Trial for Hormone Sensitive, HER-2 Negative, Oncotype Recurrence Score Less Than or Equal to 18 Breast Cancer (DEBRA)

NCT04852887
View directory record Official record
Conditions
Stage I Breast Cancer
Interventions
Radiation and Endocrine Therapy (Tamoxifen, Anastrozol, Letrozole, Exemestane), Endocrine Therapy (Tamoxifen, Anastrozol, Letrozole, Exemestane)
Other · Drug
Lead sponsor
NRG Oncology
Other
Eligibility
50 Years to 70 Years
Enrollment
1,670 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2041
U.S. locations
812
States / cities
Birmingham, Alabama • Mobile, Alabama • Kingman, Arizona + 553 more
Source: ClinicalTrials.gov public record
Updated Apr 23, 2026 · Synced Oct 23, 2026, 9:02 PM EDT
Recruiting Phase 2 Interventional

Trial of Neratinib Plus Capecitabine in Subjects With HER2-Negative Metastatic Breast Cancer With Brain Metastases and Abnormally Active HER2 Signaling

NCT04965064
View directory record Official record
Conditions
Breast Cancer
Interventions
Capecitabine and Neratinib.
Drug
Lead sponsor
University of Rochester
Other
Eligibility
18 Years and older
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Dec 15, 2025 · Synced Oct 23, 2026, 9:02 PM EDT
Completed Phase 3 Interventional Results available

Docetaxel, Carboplatin, Trastuzumab, and Pertuzumab With or Without Estrogen Deprivation in Treating Patients With Hormone Receptor-Positive, HER2-Positive Operable or Locally Advanced Breast Cancer

NCT02003209
View directory record Official record
Conditions
HER2-Positive Breast Carcinoma, Hormone Receptor-Positive Breast Carcinoma, Stage IB Breast Cancer AJCC 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
Interventions
Aromatase Inhibition Therapy, Carboplatin, Cytology Specimen Collection Procedure, Docetaxel, Goserelin Acetate, Laboratory Biomarker Analysis, Pertuzumab, Quality-of-Life Assessment, Therapeutic Conventional Surgery, Trastuzumab, Whole Breast Irradiation
Drug · Other · Biological + 2 more
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older · Female only
Enrollment
315 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2025
U.S. locations
731
States / cities
Fairbanks, Alaska • Hot Springs, Arkansas • Anaheim, California + 466 more
Source: ClinicalTrials.gov public record
Updated Oct 6, 2026 · Synced Oct 23, 2026, 9:02 PM EDT
Terminated Phase 1Phase 2 Interventional Results available

T-DM1 Alone Versus T-DM1 and Metronomic Temozolomide in Secondary Prevention of HER2-Positive Breast Cancer Brain Metastases Following Stereotactic Radiosurgery

NCT03190967
View directory record Official record
Conditions
Breast Cancer, Brain Metastasis, Brain Cancer
Interventions
T-DM1, TMZ
Drug
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2023
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 11, 2023 · Synced Oct 23, 2026, 9:02 PM EDT
Active, not recruiting Phase 1Phase 2 Interventional

A Study to Learn About the Study Medicine (Called PF-07220060 in Combination With PF-07104091) In Participants With Breast Cancer and Solid Tumors

NCT05262400
View directory record Official record
Conditions
Breast Cancer, Solid Tumors
Interventions
PF-07220060 + PF-07104091 combination dose escalation, PF-07104091 + PF-07220060 + fulvestrant dose expansion, PF-07104091 + PF-07220060 + letrozole dose expansion
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
235 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
12
States / cities
Los Angeles, California • Santa Monica, California • Boston, Massachusetts + 5 more
Source: ClinicalTrials.gov public record
Updated Sep 14, 2026 · Synced Oct 23, 2026, 9:02 PM EDT
Active, not recruiting Phase 3 Interventional

Study to Evaluate Efficacy & Safety of Afuresertib Plus Fulvestrant in Patients With Locally Advanced or Metastatic HR+/HER2- Breast Cancer

NCT04851613
View directory record Official record
Conditions
Breast Cancer
Interventions
Afuresertib, Afuresertib/placebo
Drug
Lead sponsor
Laekna Limited
Industry
Eligibility
18 Years and older
Enrollment
256 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
6
States / cities
Santa Monica, California • Atlanta, Georgia • Iowa City, Iowa + 3 more
Source: ClinicalTrials.gov public record
Updated Apr 2, 2026 · Synced Oct 23, 2026, 9:02 PM EDT
Active, not recruiting Phase 2 Interventional Results available

A Study to Investigate Efficacy and Safety With Oral AZD9833 Compared With Intramuscular Fulvestrant in Post-menopausal Women at Least 18 Years of Age With Advanced ER-positive HER2 Negative Breast Cancer

NCT04214288
View directory record Official record
Conditions
Advanced ER-Positive HER2-Negative Breast Cancer
Interventions
AZD9833, Fulvestrant
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 130 Years · Female only
Enrollment
240 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2027
U.S. locations
9
States / cities
Birmingham, Alabama • Long Beach, California • Fort Myers, Florida + 6 more
Source: ClinicalTrials.gov public record
Updated Aug 26, 2026 · Synced Oct 23, 2026, 9:02 PM EDT
Completed Phase 1Phase 2 Interventional Results available

A Study of Mirdametinib on Its Own or in Combination With Fulvestrant in People With Solid Tumor Cancer

NCT05054374
View directory record Official record
Conditions
Breast Cancer, Breast Cancer Stage IV, HER2-negative Breast Cancer, Solid Carcinoma, MEK1 Gene Mutation, MEK2 Gene Mutation, Metastatic Breast Cancer
Interventions
Mirdametinib, Fulvestrant
Drug
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
4
States / cities
Middletown, New Jersey • Commack, New York • Harrison, New York + 1 more
Source: ClinicalTrials.gov public record
Updated May 23, 2025 · Synced Oct 23, 2026, 9:02 PM EDT
Completed Phase 1 Interventional Results available

MM-111 in Combination With Herceptin in Patients With Advanced Her2 Amplified, Heregulin Positive Breast Cancer

NCT01097460
View directory record Official record
Conditions
Breast Neoplasms
Interventions
MM-111 + Herceptin
Drug
Lead sponsor
Merrimack Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
3
States / cities
Indianapolis, Indiana • Boston, Massachusetts • Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Jan 7, 2015 · Synced Oct 23, 2026, 9:02 PM EDT
Active, not recruiting Phase 1 Interventional

ELVN-002 in HER2 Mutant Non-Small Cell Lung Cancer

NCT05650879
View directory record Official record
Conditions
HER2 Mutant Non-small Cell Lung Cancer, HER2-positive Metastatic Breast Cancer, HER2 Gene Mutation, HER2 Amplification
Interventions
ELVN-002, Fam-Trastuzumab Deruxtecan-Nxki, Trastuzumab emtansine
Drug
Lead sponsor
Enliven Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
198 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
5
States / cities
Aurora, Colorado • Orlando, Florida • Plantation, Florida + 2 more
Source: ClinicalTrials.gov public record
Updated Jul 15, 2025 · Synced Oct 23, 2026, 9:02 PM EDT
Terminated Phase 1 Interventional

A Study of SGN-CD228A in Advanced Solid Tumors

NCT04042480
View directory record Official record
Conditions
Cutaneous Melanoma, Pleural Mesothelioma, HER2 Negative Breast Neoplasms, Non-small Cell Lung Cancer, Colorectal Cancer, Pancreatic Ductal Adenocarcinoma
Interventions
SGN-CD228A
Drug
Lead sponsor
Seagen Inc.
Industry
Eligibility
18 Years and older
Enrollment
88 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
10
States / cities
Birmingham, Alabama • Los Angeles, California • Chicago, Illinois + 7 more
Source: ClinicalTrials.gov public record
Updated Mar 23, 2023 · Synced Oct 23, 2026, 9:02 PM EDT
Completed Phase 3 Interventional Results available

DS-8201a in Pre-treated HER2 Breast Cancer That Cannot be Surgically Removed or Has Spread [DESTINY-Breast02]

NCT03523585
View directory record Official record
Conditions
Breast Cancer
Interventions
Trastuzumab deruxtecan, Capecitabine, Lapatinib, Trastuzumab
Drug
Lead sponsor
Daiichi Sankyo
Industry
Eligibility
18 Years and older
Enrollment
608 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2025
U.S. locations
41
States / cities
Chandler, Arizona • Los Angeles, California • Monterey, California + 34 more
Source: ClinicalTrials.gov public record
Updated Feb 27, 2026 · Synced Oct 23, 2026, 9:02 PM EDT
Completed Phase 1 Interventional

Safety and Efficacy Study of HER2/Neu (E75) Vaccine in Breast Cancer

NCT00854789
View directory record Official record
Conditions
Breast Cancer
Interventions
E75 + GM-CSF vaccine
Biological
Lead sponsor
COL George Peoples, MD, FACS
Federal
Eligibility
18 Years and older
Enrollment
95 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2013
U.S. locations
2
States / cities
Washington D.C., District of Columbia • Windber, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 31, 2020 · Synced Oct 23, 2026, 9:02 PM EDT
Recruiting Phase 2 Interventional

Toci +/- SOC Chemo for Metastatic Triple Negative and ER-positive, HER2-negative Breast Cancers

NCT05846789
View directory record Official record
Conditions
Metastatic Breast Cancer, Triple Negative Breast Cancer, Estrogen-receptor-low Breast Cancer, ER Positive, HER2 Negative Breast Cancer
Interventions
SOC Chemotherapy, Tocilizumab/Tocilizumab Biosimilar
Drug
Lead sponsor
Kathy Miller
Other
Eligibility
18 Years and older
Enrollment
168 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
7
States / cities
Atlanta, Georgia • Carmel, Indiana • Indianapolis, Indiana + 3 more
Source: ClinicalTrials.gov public record
Updated Sep 3, 2026 · Synced Oct 23, 2026, 9:02 PM EDT
Active, not recruiting Phase 3 Interventional Results available

Efficacy and Safety Comparison of Niraparib to Placebo in Participants With Human Epidermal Growth Factor 2 Negative (HER2-) Breast Cancer Susceptibility Gene Mutation (BRCAmut) or Triple-Negative Breast Cancer (TNBC) With Molecular Disease

NCT04915755
View directory record Official record
Conditions
Neoplasms, Breast
Interventions
Niraparib, Placebo
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
24
States / cities
Burbank, California • Duarte, California • Palo Alto, California + 20 more
Source: ClinicalTrials.gov public record
Updated Jul 16, 2025 · Synced Oct 23, 2026, 9:02 PM EDT
Completed Phase 1 Interventional

CP-724,714 in Treating Patients With Metastatic Breast Cancer

NCT00055926
View directory record Official record
Conditions
Breast Cancer
Interventions
CP-724,714
Drug
Lead sponsor
Jonsson Comprehensive Cancer Center
Other
Eligibility
18 Years and older
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2005
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Aug 3, 2020 · Synced Oct 23, 2026, 9:02 PM EDT
Completed Phase 3 Interventional Results available

Paclitaxel With / Without GW572016 (Lapatinib) As First Line Therapy For Women With Advanced Or Metastatic Breast Cancer

NCT00075270
View directory record Official record
Conditions
Neoplasms, Breast
Interventions
Paclitaxel, GW572016 (Lapatinib)
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older · Female only
Enrollment
580 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2012
U.S. locations
45
States / cities
Tucson, Arizona • Hot Springs, Arkansas • Jonesboro, Arkansas + 40 more
Source: ClinicalTrials.gov public record
Updated May 6, 2015 · Synced Oct 23, 2026, 9:02 PM EDT