Clinical Trials Browser

Phase 1 × Breast Neoplasms × Fulvestrant × Clear all

NCT06120283 2026-04-15

BGB-43395 Alone or as Part of Combination Therapies in Participants With Breast Cancer and Other Advanced Solid Tumors

Phase 1 Recruiting

Breast Neoplasms, Carcinoma, Non-Small-Cell Lung

NCT05238922 2026-04-14

Study of INCB123667 in Subjects With Advanced Solid Tumors

Phase 1 Recruiting

BreastGastrointestinalGynecologic

Carcinoma, Ovarian Epithelial, Breast Neoplasms, Digestive System Neoplasms

NCT06625775 2026-04-13

Open-Label Study of BBO-10203 in Subjects With Advanced Solid Tumors

Phase 1 Recruiting

BreastGastrointestinalThoracic

Breast Neoplasms, Carcinoma, Non-Small-Cell Lung, Lung Neoplasms, Neoplasm Metastasis, Colorectal Neoplasms

NCT07408089 2026-04-13

KOMODO-1

Phase 1 Recruiting

Breast Neoplasms

NCT05307705 2026-03-27

PIKASSO-01

Phase 1 Active not recruiting

Breast Neoplasms

NCT07038369 2026-03-17

A Phase 1 Study of ATV-1601 in Patients With Advanced Cancer That Have AKT1 E17K Mutations

Phase 1 Active not recruiting

BreastGenitourinaryGynecologic

Breast Diseases, Breast Neoplasms, Uterine Cervical Neoplasms, Genital Neoplasms, Female, Neoplasms, Neoplasms by Site, Ovarian Neoplasms, Prostatic Neoplasms, Urogenital Neoplasms, Uterine Neoplasms, Endometrial Neoplasms, Triple Negative Breast Neoplasms

NCT03006172 2026-03-11

To Evaluate the Safety, Tolerability, and Pharmacokinetics of Inavolisib Single Agent in Participants With Solid Tumors and in Combination With Endocrine and Targeted Therapies in Participants With Breast Cancer

Phase 1 Active not recruiting

Breast Neoplasms

NCT04572295 2026-03-11

A Study of E7090 as Monotherapy and in Combination With Other Anticancer Agents in Participants With Estrogen Receptor Positive (ER+) and Human Epidermal Growth Receptor 2 Negative (HER2-) Recurrent/Metastatic Breast Cancer

Phase 1 Active not recruiting

Acrocephalosyndactylia, Breast Neoplasms

NCT06257264 2026-03-05

A Study to Examine the Safety of Different Doses of BG-68501 Given to Participants With Advanced-Stage Tumors

Phase 1 Recruiting

BreastGastrointestinalGenitourinaryGynecologicThoracic

Urinary Bladder Neoplasms, Breast Neoplasms, Ovarian Neoplasms, Prostatic Neoplasms, Stomach Neoplasms, Endometrial Neoplasms, Small Cell Lung Carcinoma, Triple Negative Breast Neoplasms

NCT02057133 2026-01-26

A Study of LY2835219 (Abemaciclib) in Combination With Therapies for Breast Cancer That Has Spread

Phase 1 Active not recruiting

Breast Neoplasms

NCT03685331 2026-01-09

HOPE: Olaparib, Palbociclib and Fulvestrant in Patients With BRCA Mutation-associated, HR+, HER2-metastatic Breast Cancer

Phase 1 Completed

Breast Neoplasms

NCT07318805 2026-01-06

A Study to Learn About the Study Medicine Called PF-08032562 in People With Advanced or Metastatic Solid Tumors

Phase 1 Recruiting

BreastGastrointestinal

Breast Neoplasms, Colonic Neoplasms, Colorectal Neoplasms, Triple Negative Breast Neoplasms

NCT04556773 2025-12-17

DB-08

Phase 1 Active not recruiting

Breast Neoplasms, Triple Negative Breast Neoplasms

NCT06756932 2025-11-10

BGB-21447 (Bcl-2 Inhibitor) Combinations for Adults With Hormone-Receptor Positive (HR+)/Human Epidermal Growth Factor Receptor 2 Negative (HER2-) Metastatic Breast Cancer

Phase 1 Recruiting

Breast Neoplasms

NCT06784193 2025-10-10

Phase 1 Study of OP-3136 in Advanced or Metastatic Solid Tumors

Phase 1 Recruiting

Breast Neoplasms, Carcinoma, Non-Small-Cell Lung

NCT03959891 2025-09-29

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

Phase 1 Active not recruiting

Breast Neoplasms

NCT03939897 2025-09-24

Testing the Addition of Copanlisib to Usual Treatment (Fulvestrant and Abemaciclib) in Metastatic Breast Cancer

Phase 1 Active not recruiting

24 enrolled 15 charts

Breast Neoplasms

NCT05216432 2025-09-22

First-in-Human Study of Mutant-selective PI3Kα Inhibitor, RLY-2608, as a Single Agent in Patients With Advanced Solid Tumors and in Combination With Endocrine Therapy +/- a CDK4/6 or CDK4 Inhibitor in Patients With Advanced Solid Tumors or Advanced Breast Cancer

Phase 1 Recruiting

Breast Neoplasms

NCT07163481 2025-09-16

SoGreat

Phase 1 Not yet recruiting

Breast Neoplasms, Neoplasm Metastasis

NCT06239467 2025-09-09

PIKture-01

Phase 1 Recruiting

Breast Neoplasms

NCT05870579 2025-08-21

[177Lu]Lu-NeoB in Combination With Ribociclib and Fulvestrant in Participants With ER+, HER2- and GRPR+ Advanced Breast Cancer

Phase 1 Recruiting

Breast Neoplasms

NCT03767335 2025-06-26

B-PRECISE-01

Phase 1 Completed

62 enrolled 18 charts

Breast Neoplasms

NCT03099174 2025-06-24

This Study in Patients With Different Types of Cancer (Solid Tumours) Aims to Find a Safe Dose of Xentuzumab in Combination With Abemaciclib With or Without Hormonal Therapies. The Study Also Tests How Effective These Medicines Are in Patients With Lung and Breast Cancer

Phase 1 Completed

133 enrolled 26 charts

Breast Neoplasms, Neoplasms

NCT06515470 2025-06-06

Safety, Tolerability, Pharmacokinetics, and Preliminary Efficacy of BTX-9341 in Advanced and/or Metastatic Breast Cancer

Phase 1 Recruiting

Breast Neoplasms

NCT06253195 2025-06-05

BGB-43395 Alone or as Part of Combination Therapies in Chinese Participants With HR+/HER2- Breast Cancer and Other Advanced Solid Tumors

Phase 1 Active not recruiting

Breast Neoplasms, Neoplasm Metastasis

NCT03294694 2025-05-31

Ribociclib + PDR001 in Breast Cancer and Ovarian Cancer

Phase 1 Terminated

BreastGynecologic

Carcinoma, Ovarian Epithelial, Breast Neoplasms

NCT03554044 2025-05-21

T-VEC With Chemotherapy or Endocrine Therapy in Treating Participants With HER2- Negative Breast Cancer

Phase 1 Completed

Breast Neoplasms

NCT05759949 2025-05-16

First-in-Human Study of RLY-5836 in Advanced Breast Cancer and Other Solid Tumors

Phase 1 Completed

Breast Neoplasms

NCT05384119 2025-02-21

Phase 1b/2 Study of TTI-101 in Combination for Patients With Metastatic Hormone Receptor-Positive and HER2-Negative Breast Cancer

Phase 1 Terminated

Breast Neoplasms

NCT03854903 2025-02-06

WI231696: Bosutinib, Palbocicilib and Fulvestrant for HR+HER2- Advanced Breast Cancer Refractory to a CDK4/6 Inhibitor

Phase 1 Completed

Breast Neoplasms, Neoplasm Metastasis

NCT03238196 2024-11-14

Fulvestrant, Palbociclib and Erdafitinib in ER+/HER2-/FGFR-amplified Metastatic Breast Cancer

Phase 1 Completed

35 enrolled 19 charts

Breast Neoplasms

NCT04060862 2024-11-08

IPATunity150

Phase 1 Terminated

20 enrolled 11 charts

Breast Neoplasms

NCT02964507 2024-08-29

Dose Escalation and Expansion Study of GSK525762 in Combination With Fulvestrant in Participants With Hormone Receptor-positive (HR+)/Human Epidermal Growth Factor Receptor 2 Negative (HER2-) Advanced or Metastatic Breast Cancer

Phase 1 Terminated

124 enrolled 23 charts

Breast Neoplasms, Neoplasms

NCT02599714 2024-06-06

PASTOR

Phase 1 Completed

Breast Neoplasms

NCT02792465 2024-01-17

A Study of Investigational Drug CFI-402257 in Patients With Advanced Solid Tumors

Phase 1 Active not recruiting

Breast Neoplasms

NCT05905341 2023-11-08

Study of PF-07224826, as a Single Agent or in Combination With Endocrine Therapy in Participants With Breast Cancer and Other Advanced Solid Tumors.

Phase 1 Withdrawn

BreastGynecologicSarcomaThoracic

Breast Neoplasms, Carcinoma, Non-Small-Cell Lung, Liposarcoma, Ovarian Neoplasms

NCT04247126 2023-10-27

A Study of SY 5609, a Selective CDK7 Inhibitor, in Advanced Solid Tumors

Phase 1 Completed

BreastGastrointestinalThoracic

Breast Neoplasms, Pancreatic Neoplasms, Small Cell Lung Carcinoma

NCT06074757 2023-10-10

Open Label, Sequential Dosing , Single Ascending Dose and Multiple Dose Safety Tolerability and Pharmacokinetic Study

Phase 1 Completed

Breast Neoplasms

NCT03310541 2023-05-06

AZD5363 in Patients With Advanced Solid Tumors Harboring AKT Mutations

Phase 1 Completed

BreastGenitourinary

Breast Neoplasms, Prostatic Neoplasms

NCT05504213 2022-08-17

A Phase Ib Study of HS-10352 Plus Fulvestrant in Patients With Advanced Breast Cancer

Phase 1 Unknown

Breast Neoplasms

NCT02684032 2022-07-27

A Study To Assess The Tolerability And Clinical Activity Of Gedatolisib In Combination With Palbociclib/Letrozole Or Palbociclib/Fulvestrant In Women With Metastatic Breast Cancer

Phase 1 Completed

Breast Neoplasms, Hereditary Sensory and Autonomic Neuropathies

NCT01655225 2022-04-08

A Study of LY3023414 in Participants With Advanced Cancer

Phase 1 Completed

BreastLymphoidOther solid neoplasmThoracic

Mesothelioma, Malignant, Breast Neoplasms, Carcinoma, Non-Small-Cell Lung, Lymphoma, Lymphoma, Non-Hodgkin, Mesothelioma, Neoplasm Metastasis

NCT02626507 2022-02-09

Phase I Study of Combination of Gedatolisib With Palbociclib and Faslodex in Patients With ER+/HER2- Breast Cancer

Phase 1 Unknown

Breast Neoplasms

NCT02936206 2021-05-19

Examination of Breast Cancer Cells of Pre-menopausal and Post-menopausal Women Before and After Exposure to Tamoxifen or Fulvestrant.

Phase 1 Terminated

2 enrolled 5 charts

Breast Neoplasms

NCT04498520 2021-05-18

Abexinostat, Palbociclib, and Fulvestrant for the Treatment of Breast or Gynecologic Cancer

Phase 1 Withdrawn

BreastGynecologic

Breast Neoplasms, Fallopian Tube Neoplasms, Neoplasm Metastasis, Ovarian Neoplasms, Carcinoma, Endometrioid

NCT03134638 2021-03-09

A Study of SY-1365 in Adult Patients With Advanced Solid Tumors

Phase 1 Terminated

BreastGynecologic

Breast Neoplasms, Ovarian Neoplasms

NCT02088684 2020-12-17

Study of LEE011 With Fulvestrant and BYL719 or BKM120 in Advanced Breast Cancer

Phase 1 Completed

Breast Neoplasms

NCT01597193 2019-05-08

Safety Study of Enzalutamide (MDV3100) in Patients With Incurable Breast Cancer

Phase 1 Completed

101 enrolled 33 charts

Breast Neoplasms

NCT02384746 2019-04-29

Millennium

Phase 1 Terminated

Breast Neoplasms

NCT02219789 2018-10-03

Alisertib and Fulvestrant in Treating Patients With Hormone Receptor Positive Breast Cancer That is Metastatic or Locally Advanced and Cannot Be Removed by Surgery

Phase 1 Completed

Breast Neoplasms