NCT05696626

Brief Summary

The goal of this clinical trial is to assess the efficacy, safety and tolerability of the combination of lasofoxifene and abemaciclib compared to fulvestrant and abemaciclib for the treatment of pre- and postmenopausal women and men who have previously received ribociclib or palbociclib-based treatment and have locally advanced or metastatic estrogen receptor positive (ER+)/human epidermal growth factor 2 negative (HER2-) breast cancer with an estrogen receptor 1 (ESR1) mutation. The main question the study aims to answer is: • To compare the efficacy of the combination of lasofoxifene and abemaciclib with that of fulvestrant and abemaciclib Participants will receive either receive 5 mg/d of oral lasofoxifene plus oral abemaciclib 150 mg twice a day or the combination of fulvestrant 500 mg intramuscular (IM) on Days 1, 15, and 29 and then once monthly thereafter plus oral abemaciclib 150 mg twice a day.

Trial Health

88
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Strong global presence with extensive site network
Enrollment
500

participants targeted

Target at P50-P75 for phase_3

Timeline
22mo left

Started Oct 2023

Typical duration for phase_3

Geographic Reach
17 countries

224 active sites

Status
recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress59%
Oct 2023Apr 2028

First Submitted

Initial submission to the registry

January 13, 2023

Completed
12 days until next milestone

First Posted

Study publicly available on registry

January 25, 2023

Completed
9 months until next milestone

Study Start

First participant enrolled

October 31, 2023

Completed
3.4 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

April 1, 2027

Expected
1 year until next milestone

Study Completion

Last participant's last visit for all outcomes

April 1, 2028

Last Updated

April 21, 2026

Status Verified

April 1, 2026

Enrollment Period

3.4 years

First QC Date

January 13, 2023

Last Update Submit

April 16, 2026

Conditions

Outcome Measures

Primary Outcomes (1)

  • Progression free survival (PFS)

    PFS is defined as the time from the date of randomization \[Visit 0 (Day 1)\] to the earliest date of first documented progression per RECIST 1.1 or death due to any cause.

    Within approximately 3 years

Secondary Outcomes (8)

  • Objective response rate (ORR)

    Within approximately 3 years

  • Overall survival (OS)

    Within approximately 3 years

  • Clinical benefit rate (CBR)

    Within approximately 3 years

  • Duration of response (DoR) in subjects with an objective response

    Within approximately 3 years

  • Time to response (TTR) in subjects with an objective response

    Within approximately 3 years

  • +3 more secondary outcomes

Study Arms (2)

Treatment

EXPERIMENTAL

Pre- and Postmenopausal Women and Men with locally advanced or metastatic ER+/HER2- breast cancer who have disease progression on an AI in combination with either palbociclib or ribociclib as their first hormonal treatment for metastatic disease and who have an ESR1 mutation.

Drug: Lasofoxifene in combination with abemaciclib

Reference Therapy

ACTIVE COMPARATOR

Pre- and Postmenopausal Women and Men with locally advanced or metastatic ER+/HER2- breast cancer who have disease progression on an AI in combination with either palbociclib or ribociclib as their first hormonal treatment for metastatic disease and who have an ESR1 mutation.

Drug: Fulvestrant in combination with abemaciclib

Interventions

Fulvestrant 500 mg intramuscular (IM) on Days 1, 15, and 29 and then once monthly thereafter plus oral abemaciclib 150 mg twice a day

Reference Therapy

5 mg/d of oral lasofoxifene plus oral abemaciclib 150 mg twice a day

Treatment

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Pre- or postmenopausal women or men.
  • Locally advanced and/or metastatic ER+ breast cancer with radiological or clinical evidence of progression on an AI in combination with either palbociclib or ribociclib as their first hormonal treatment for metastatic disease.
  • Histological or cytological confirmation of ER+/HER2 - disease
  • No evidence of progression for at least 6 months on an AI/CDKi combination for advanced breast cancer.
  • At least 1 or more ESR1 point mutations in the ESR1 ligand binding domain as assessed in cell- free ctDNA obtained from a blood or breast cancer tissue.
  • Locally advanced or metastatic breast cancer with either measurable (according to RECIST 1.1) or non-measurable lesions.
  • Subjects may have received 1 cytotoxic chemotherapy regimen in the metastatic disease setting prior to study entry, but must have recovered from chemotherapy acute toxicity excluding alopecia and Grade 2 peripheral neuropathy.
  • Eastern Cooperative Oncology Group (ECOG) performance score of 0 or 1
  • Adequate organ function
  • Able to swallow tablets
  • Brain metastases are allowed only if the following 4 parameters hold:
  • Asymptomatic,
  • Definitively treated (e.g., radiotherapy, surgery),
  • Not requiring steroids up to 4 weeks before study treatment initiation, AND
  • Central nervous system disease stable for \>3 months prior to registration as documented by magnetic resonance imagining (MRI).
  • +2 more criteria

You may not qualify if:

  • Lymphangitic carcinomatosis involving the lung.
  • History of Grade 3 or Grade 4 interstitial lung disease (ILD) on previous therapy.
  • Visceral crisis in need of cytotoxic chemotherapy as assessed by the investigator.
  • Prior progression of disease on abemaciclib, fulvestrant, or other selective estrogen receptor degrader (SERD) therapy.
  • Subjects with a known hypersensitivity to fulvestrant or to any of the excipients
  • Radiotherapy within 30 days prior to Visit 0 (Day 1) except in case of localized radiotherapy for analgesic purposes or for lytic lesions at risk of fracture, which can then be completed within 7 days prior to Visit 0 (Day 1). Subjects must have recovered from radiotherapy toxicities prior to Visit 0 (Day 1).
  • Known RB1 mutations or deletions that in the opinion of the investigator confer resistance to CDK4/6i. (Screening for RB1 mutation is not required for entry.)
  • History of long QTc (Q-T interval corrected for heart rate) syndrome or a QTc of \>480 msec.
  • History of a pulmonary embolus (PE), deep vein thrombosis (DVT), or any known thrombophilia, unless the event occurred greater than 6 months prior to screening and the subject is treated with chronic anticoagulant therapy such as apixaban (Eliquis) or rivaroxaban (Xarelto).
  • Lasofoxifene is not recommended for use in subjects with conditions that place them at increased risk for VTEs (such as severe congestive heart failure \[CHF\] or prolonged immobilization).
  • On concomitant strong CYP3A4 inhibitors.
  • On strong and moderate CYP3A4 inducers.
  • Any significant co-morbidity that would impact the study or the subject's safety, including subjects with significant malabsorption.
  • Active systemic bacterial or fungal infection (requiring intravenous \[IV\] antibiotics or antifungals at the time of initiating study treatment).
  • Known infection with human immunodeficiency virus (HIV), hepatitis B virus (HBV), or hepatitis C virus (HCV).
  • +7 more criteria

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (224)

Mayo Clinic - Scottsdale

Scottsdale, Arizona, 85259, United States

RECRUITING

University of Arizona - Cancer Center

Tucson, Arizona, 85719, United States

RECRUITING

Providence Medical Foundation - Santa Rosa, CA

Santa Rosa, California, 95403, United States

RECRUITING

Mayo Clinic - Jacksonville

Jacksonville, Florida, 32224, United States

RECRUITING

Miami Cancer Institute

Miami, Florida, 33143, United States

RECRUITING

Miami Cancer Institute Plantation

Plantation, Florida, 33324, United States

RECRUITING

Emory University School of Medicine

Atlanta, Georgia, 30322, United States

RECRUITING

Norton Cancer Institute

Louisville, Kentucky, 40202, United States

RECRUITING

Johns Hopkins Kimmel Cancer Center

Baltimore, Maryland, 21231, United States

RECRUITING

Massachusetts General Hospital

Boston, Massachusetts, 02114, United States

RECRUITING

Dana-Farber Cancer Institute

Boston, Massachusetts, 02115, United States

RECRUITING

Beth Israel Deaconess Medical Center

Boston, Massachusetts, 02215, United States

RECRUITING

Cancer and Hematology Centers of Western Michigan

Grand Rapids, Michigan, 49503, United States

RECRUITING

Allina Health System DBA Virginia Piper Cancer Institute

Minneapolis, Minnesota, 55407, United States

RECRUITING

Mayo Clinic - Rochester

Rochester, Minnesota, 55905, United States

RECRUITING

Saint Luke's Cancer Institute

Kansas City, Missouri, 64111, United States

RECRUITING

Washington University School of Medicine

St Louis, Missouri, 63110, United States

RECRUITING

Renown Regional Medical Centre

Reno, Nevada, 89502, United States

RECRUITING

Cancer Care Specialists

Reno, Nevada, 89511-2250, United States

RECRUITING

New Jersey Cancer Care, PA

Belleville, New Jersey, 07109, United States

WITHDRAWN

Rutgers Cancer Institute of New Jersey

New Brunswick, New Jersey, 08901, United States

RECRUITING

Presbyterian Kaseman Hospital

Albuquerque, New Mexico, 87110, United States

NOT YET RECRUITING

Presbyterian Rust Cancer Center

Rio Rancho, New Mexico, 87124, United States

RECRUITING

The Blavatnik Family - Chelsea Medical Center at Mount Sinai

New York, New York, 10011, United States

RECRUITING

Icahn School of Medicine at Mount Sinai

New York, New York, 10029, United States

RECRUITING

David H. Koch Center for Cancer Care at Memorial Sloan Kettering Cancer Center

New York, New York, 10065, United States

RECRUITING

Duke University Medical Center

Durham, North Carolina, 27705, United States

RECRUITING

Altru Health Systems

Grand Forks, North Dakota, 58201, United States

COMPLETED

University Hospitals Seidman Cancer Center

Cleveland, Ohio, 44106, United States

NOT YET RECRUITING

Cleveland Clinic

Cleveland, Ohio, 44119, United States

WITHDRAWN

The Ohio State University Comprehensive Cancer Center - Arthur G. James Cancer Hospital and Richard J. Solovev Research Institute (OSUCCC - James)

Columbus, Ohio, 42112, United States

RECRUITING

University of Pittsburgh Medical Center

Pittsburgh, Pennsylvania, 15232, United States

COMPLETED

Baylor College of Medicine

Houston, Texas, 77030, United States

RECRUITING

MD Anderson Cancer Center

Houston, Texas, 77030, United States

RECRUITING

Harris Health System - Smith Clinic

Houston, Texas, 77054, United States

RECRUITING

Swedish Cancer Institute (SCI)

Seattle, Washington, 98104, United States

WITHDRAWN

Blacktown Hospital

Blacktown, Australia

RECRUITING

Concord Repatriation General Hospital

Concord, Australia

RECRUITING

Mater Misericordiae Ltd, South Brisbane

South Brisbane, Australia

RECRUITING

Cliniques Universitaires Saint-Luc

Brussels, Belgium

NOT YET RECRUITING

Antwerp University Hospital (UZA)

Edegem, Belgium

WITHDRAWN

Universitaire Ziekenhuizen Leuven

Leuven, Belgium

RECRUITING

CHU UCL Namur - Site De Sainte-Elisabeth

Namur, Belgium

RECRUITING

The Ottawa General Hospital

Ottawa, Ontario, Canada

RECRUITING

Sunnybrook Health Sciences Centre -Bayview Campus

Toronto, Ontario, Canada

RECRUITING

Hospital Maisonneuve-Rosemont

Montreal, Quebec, Canada

RECRUITING

Lady Davis Institute for Medical Research Jewish General Hospital

Montreal, Quebec, Canada

RECRUITING

CIUSSS du Saguenay-Lac-Saint-Jean

Saguenay, Quebec, Canada

WITHDRAWN

Anhui Provincial Cancer Hospital

Anhui, China

RECRUITING

Anyang Tumour Hospital

Anyang, China

RECRUITING

Beijing Cancer Hospital

Beijing, China

RECRUITING

Peking Union Medical College Hospital

Beijing, China

RECRUITING

The First Affiliated Hospital of Bengbu Medical University

Bengbu, China

RECRUITING

The First Hospital of Jilin University

Changchun, China

RECRUITING

The Second Xiangya Hospital of Central South University

Changsha, China

RECRUITING

Sichuan Provincial People's Hospital

Chengdu, China

RECRUITING

West China Hospital, Sichuan University

Chengdu, China

RECRUITING

The First Affiliated Hospital, Chongqing Medical University

Chongqicun, China

RECRUITING

The Second Hospital of Dalian Medical University

Dalian, China

RECRUITING

Deyang People's Hospital

Deyang, China

RECRUITING

Fuyang Cancer Hosptial

Fuyang, China

RECRUITING

Fujian Cancer Hospital

Fuzhou, China

RECRUITING

Fujian Medical University Union Hospital

Fuzhou, China

RECRUITING

Zhujiang Hospital of Nanfang Medical University

Guandong, China

RECRUITING

Guangdong Provincial People's Hospital

Guangdong, China

RECRUITING

Meizhou People's Hospital

Guangdong, China

RECRUITING

Peking University Shenzhen Hospital

Guangdong, China

RECRUITING

Sun Yat-Sen University- Cancer Center

Guangdong, China

RECRUITING

Sun Yat-sen Memorial Hospital, Sun Yat-sen University

Guangzhou, China

RECRUITING

The First Affiliated Hospital of Hainan Medical University

Haikou, China

RECRUITING

Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University

Hangzhou, China

RECRUITING

The First Affiliated Hospital, College of Medicine, Zhejiang University

Hangzhou, China

RECRUITING

Zhejiang Provincial Hospital of Chinese Medicine

Hangzhou, China

RECRUITING

Hebei Medical University - The Fourth Hospital - Hebei Provincial Tumor Hospital

Hebei, China

RECRUITING

Xiangyang Central Hospital

Hubei, China

RECRUITING

Xiangya Hospital Central South University

Hunan, China

RECRUITING

Jieyang People's Hospital

Jieyang, China

RECRUITING

Shandong Province Tumor Hospital

Jinan, China

RECRUITING

Yunnan Cancer Hospital

Kunming, China

RECRUITING

Gansu Provincial Hospital

Lanzhou, China

RECRUITING

The First Hospital of Lanzhou University

Lanzhou, China

RECRUITING

Linyi Cancer Hospital

Linyi, China

RECRUITING

Luoyang Central Hospital

Luoyang, China

RECRUITING

The First Affiliated Hospital of Henan University of Science and Technology

Luoyang, China

RECRUITING

The Affiliated Hospital of Southwest Medical University (Luzhou Medical College)

Luzhou, China

RECRUITING

Jiangxi Cancer Hospital

Nanchang, China

RECRUITING

Nanchang People's Hospital

Nanchang, China

RECRUITING

Jiangsu Province Hospital - The First Affiliated Hospital with Nanjing Medical University

Nanjing, China

RECRUITING

Nanjing Drum Tower Hospital

Nanjing, China

RECRUITING

Guangxi Medical University Cancer Hospital

Nanning, China

RECRUITING

Nanyang Central Hospital

Nanyang, China

RECRUITING

The Second People's Hospital of Neijiang

Neijiang, China

RECRUITING

Ningbo Medical Center Li Huili Hospital

Ningbo, China

RECRUITING

The First People'S Hospital of Ping Ding Shan

Pingdingshan, China

RECRUITING

Qingdao Central Hospital, University of Health and Rehabilitation Sciences

Qingdao, China

RECRUITING

The Affiliated Hospital of Qingdao University

Qingdao, China

RECRUITING

Quanzhou First Hospital

Quanzhou, China

RECRUITING

Huashan Hospital, Fudan University

Shanghai, China

RECRUITING

Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine

Shanghai, China

RECRUITING

Fudan University Cancer Center

Shang’ai, China

RECRUITING

First Affiliated Hospital of Xi'an Jiaotong University

Shanxi, China

RECRUITING

The Central Hospital of Shaoyang

Shaoyang, China

RECRUITING

Liaoning Cancer Hospital & Institute

Shenyang, China

RECRUITING

Yuebei People's Hospital

Shouguang, China

RECRUITING

University of Electonic Science & Technology (UESTC) - Sichuan Cancer Hospital & Institute

Sichuan, China

RECRUITING

Tianjin Cancer Hospital Airport Hospital

Tianjin, China

RECRUITING

Tianjin Medical University Cancer Institute & Hospital

Tianjin, China

RECRUITING

The Affiliated Cancer Hospital of Xinjiang Medical University

Ürümqi, China

RECRUITING

The First Affiliated Hospital of Wenzhou Medical University

Wenzhou, China

RECRUITING

Hubei Cancer Hospital

Wuhan, China

RECRUITING

Union Hospital Tongji Medical College Huazhong University of Science and Technolog

Wuhan, China

RECRUITING

The Second People's Hospital of WuHu

Wuhu, China

RECRUITING

The First Affiliated Hospital of Air Force Medical University

Xi Ail, China

RECRUITING

The first affiliated hospital of Xiamen University

Xiamen, China

RECRUITING

Zhongshang Hospital Xiamen University

Xiamen, China

RECRUITING

The Second Affiliated Hospital Of Xi'an Jiaotong University

Xinzheng, China

RECRUITING

The Affiliated Hospital of Xuzhou Medical University

Xuzhou, China

RECRUITING

Xuzhou Central Hospital

Xuzhou, China

RECRUITING

Yuncheng Central Hospital

Yuncheng, China

RECRUITING

Zhejiang cancer hospital

Zhejiang, China

RECRUITING

Zhejiang Provincial People's Hospital

Zhejiang, China

RECRUITING

Henan Cancer Hospital

Zhengzhou, China

RECRUITING

The First Affiliated Hospital of Zhengzhou University

Zhengzhou, China

RECRUITING

Zhongshan City People's Hospital

Zhongshan, China

RECRUITING

Zhumadian Central Hospital

Zhumadian, China

RECRUITING

Institut Sainte Catherine

Avignon, 84000, France

RECRUITING

Service d'Oncologie Medicale - CHRU Besancon

Besançon, France

RECRUITING

Institut Bergonie

Bordeaux, France

RECRUITING

Centre Francois Baclesse

Caen, France

RECRUITING

Groupement de Cooperation Sanitaire (GCS) ELSAN - Clinique Victor Hugo

Le Mans, 72015, France

RECRUITING

Centre Oscar Lambret

Lille, France

RECRUITING

Centre Leon Berard

Lyon, France

RECRUITING

Institut Paoli-Calmettes

Marseille, France

RECRUITING

HCL Centre Hospitalier Lyon Sud

Pierre-Bénite, 69310, France

RECRUITING

CHU Poitiers - Pole Regional de Cancerologie de Poitiers (PRC)

Poitiers, France

RECRUITING

Centre Henri Becquerel

Rouen, France

RECRUITING

Institut Claudius Regaud

Toulouse, France

RECRUITING

Institut Gustave Roussy

Villejuif, 94800, France

NOT YET RECRUITING

Universitaetsklinikum Carl Gustav Carus Dresden

Dresden, Germany

NOT YET RECRUITING

Klinikum rechts der Isar der Technischen Universitaet Muenchen

München, Germany

RECRUITING

Haemek Medical Center

Afula, 1834111, Israel

RECRUITING

Soroka Medical Center

Beersheba, 8486614, Israel

RECRUITING

Rambam Health Care Campus

Haifa, Israel

RECRUITING

Hadassah Ein-Karem Medical Center

Jerusalem, Israel

RECRUITING

Shaare Zedek Medical Center

Jerusalem, Israel

RECRUITING

Meir Medical Center

Kfar Saba, 4428164, Israel

RECRUITING

Rabin MC

Petah Tikva, Israel

RECRUITING

Kaplan Medical Center

Rehovot, Israel

RECRUITING

Tel Aviv Sourasky Medical Center

Tel Aviv, Israel

RECRUITING

Sheba Medical Center

Tel Litwinsky, Israel

RECRUITING

Azienda Ospedaliero-Universitaria delle Marche

Ancona, Italy

NOT YET RECRUITING

Centro Riferimento Oncologico - Aviano

Aviano, Italy

RECRUITING

La Fondazione e l'Istituto di Candiolo

Candiolo, 10060, Italy

RECRUITING

IRCCS Istituto Romagnolo per lo Studio dei Tumori Dino Amadori - IRST S.r.l.

Meldola, Italy

RECRUITING

Istituto Europeo di Oncologia

Milan, Italy

RECRUITING

Humanitas Istituto Clinico Catanese

Misterbianco, Italy

RECRUITING

Azienda Ospedaliero-Universitaria di Modena

Modena, Italy

RECRUITING

Istituto Nazionale Tumori IRCCS Fondazione G. Pascale

Naples, Italy

RECRUITING

Azienda Ospedaliero Universitaria Maggiore Della Carita

Novara, 28100, Italy

NOT YET RECRUITING

Istituto Oncologico Veneto-I.R.C.C.S. - Ospedale Busonera

Padova, 35128, Italy

NOT YET RECRUITING

Azienda Ospedaliero Universitaria di Parma

Parma, Italy

RECRUITING

Fondazione IRCCS Policlinico San Matteo

Pavia, Italy

RECRUITING

Fondazione Policlinico Universitario A. Gemelli IRCCS - Universita Cattolica del Sacro Cuore

Roma, Italy

RECRUITING

Azienda Ospedaliera Universitaria Integrata Verona-Ospedale Borgo Trento

Verona, Italy

COMPLETED

KO - MED Centra Kliniczne Sp. z o.o., Wojewodzki Szpital Specjalistyczny w Bialej Podlaskiej

Biała Podlaska, Poland

WITHDRAWN

Narodowy Instytut Onkologii im. Marii Sklodowskiej-Curie - Panstwowy Instytut Badawczy, Oddzial w Gliwicach, I Klinika Radioterapii i Chemioterapii

Gliwice, Poland

NOT YET RECRUITING

SP ZOZ Szpital Uniwersytecki w Krakowie, Oddzial Onkologii Klinicznej

Krakow, Poland

RECRUITING

Szpital Specjalistyczny im. Ludwika Rydygiera w Krakowie - Oddzial Onkologii Klinicznej z Pododdzialem Dziennym

Krakow, Poland

RECRUITING

Instytut Centrum Zdrowia Matki Polki - Klinika Onkologii

Lodz, Poland

COMPLETED

Uniwersytecki Szpital Kliniczny w Poznaniu, Oddzial Chemioterapii

Poznan, Poland

RECRUITING

Wielkopolskie Centrum Onkologii (WCO) / The Greater Poland Cancer Center

Poznan, Poland

NOT YET RECRUITING

Mazowiecki Szpital Onkologiczny

Wieliszew, Poland

RECRUITING

Centrul Medical Focus

Bucharest, Romania

WITHDRAWN

Memorial Healthcare International SRL

Bucharest, Romania

NOT YET RECRUITING

Radiotherapy Center Cluj

Cluj-Napoca, Romania

RECRUITING

Onco Clinic Consult SA

Craiova, Romania

COMPLETED

Oncology Center Sfantul Nectarie

Craiova, Romania

RECRUITING

Gral Medical SRL

Piteşti, Romania

RECRUITING

OncoMed Oncology Center

Timișoara, Romania

RECRUITING

Curie Oncology

Singapore, 329563, Singapore

RECRUITING

National Cancer Center

Gyeonggi-do, South Korea

RECRUITING

Chonnam National University Hwasun Hospital

Jeollanam-do, 58128, South Korea

RECRUITING

Asan Medical Center

Seoul, South Korea

NOT YET RECRUITING

Korea University Anam Hospital

Seoul, South Korea

RECRUITING

Severance Hospital, Yonsei University Health System

Seoul, South Korea

NOT YET RECRUITING

Hospital Clinic Barcelona

Barcelona, Spain

RECRUITING

Hospital Universitario Vall d'Hebron

Barcelona, Spain

RECRUITING

Hospital Universitario Reina Sofia

Córdoba, Spain

RECRUITING

Hospital Universitario Ramon y Cajal

Madrid, 28034, Spain

RECRUITING

Hospital Fundacion Jimenez Diaz

Madrid, 28040, Spain

NOT YET RECRUITING

Clinica Universidad de Navarra - Madrid

Madrid, Spain

RECRUITING

Hospital Beata Maria Ana

Madrid, Spain

RECRUITING

Hospital General Universitario Gregorio Maranon

Madrid, Spain

RECRUITING

Hospital Universitario 12 de Octubre

Madrid, Spain

RECRUITING

Hospital Universitario de La Princesa

Madrid, Spain

RECRUITING

Hospital Regional Universitario de Malaga

Málaga, Spain

RECRUITING

Clinica Universidad de Navarra - Pamplona

Pamplona, Spain

RECRUITING

Instituto Valenciano de Oncologia

Valencia, Spain

RECRUITING

Changhua Christian Hospital (CCH)

Changhua, Taiwan

RECRUITING

Kaohsiung Medical University Chung-Ho Memorial Hospital (KMUH)

Kaohsiung City, Taiwan

RECRUITING

National Cheng Kung University Hospital

Tainan, Taiwan

RECRUITING

Koo Foundation Sun Yat-Sen Cancer Center

Taipei, Taiwan

RECRUITING

National Taiwan University Hospital

Taipei, Taiwan

RECRUITING

Tri-Service General Hospital

Taipei, Taiwan

RECRUITING

Linkou Chang Gung Memorial Hospital (CGMHLK)

Taoyuan, Taiwan

RECRUITING

Liv Hospital Ankara

Çankaya, Ankara, Turkey (Türkiye)

NOT YET RECRUITING

Istanbul University CAPA Medical Faculty

Çapa, Istanbul, Turkey (Türkiye)

NOT YET RECRUITING

Goztepe Prof. Dr. Suleyman Yalcin City Hospital

Kadiköy, Istanbul, Turkey (Türkiye)

RECRUITING

Ege University Medical Faculty Hospital

Bornova, İzmir, Turkey (Türkiye)

NOT YET RECRUITING

Suat Seren Training and Research Hospital

Konak, İzmir, Turkey (Türkiye)

NOT YET RECRUITING

Kocaeli University Research and Application Hospital

İzmit, Kocaeli, Turkey (Türkiye)

NOT YET RECRUITING

Ankara University Medical Faculty Medical Oncology Department

Ankara, Turkey (Türkiye)

NOT YET RECRUITING

Uludag University Faculty of Medicine Hospital

Bursa, Turkey (Türkiye)

NOT YET RECRUITING

Trakya University Medical Faculty Hospital

Edirne, Turkey (Türkiye)

NOT YET RECRUITING

Medical Point Izmir Hospital

Izmir, Turkey (Türkiye)

NOT YET RECRUITING

Velindre Cancer Center

Cardiff, CF14 2TL, United Kingdom

NOT YET RECRUITING

Princess Alexandra Hospital - Harlow

Harlow, CM20 1QX, United Kingdom

RECRUITING

Leeds Teaching Hospitals NHS Trust

Leeds, United Kingdom

RECRUITING

Royal Free London NHS Foundation Trust

London, NW3 2, United Kingdom

NOT YET RECRUITING

Charing Cross Hospital

London, United Kingdom

RECRUITING

The Christie NHS Foundation Trust

Manchester, United Kingdom

RECRUITING

Milton Keynes Hospital

Milton Keynes, MK6 5LD, United Kingdom

NOT YET RECRUITING

Nottingham City Hospital

Nottingham, United Kingdom

RECRUITING

University Hospital of North Tees

Stockton-on-Tees, TS198PE, United Kingdom

WITHDRAWN

Related Publications (1)

  • Goetz MP, Wander SA, Bachelot T, de Nonneville A, Gal-Yam EN, Sammons SL, Shen S, Twelves C, Boruta G, Portman DJ, Damodaran S. ELAINE 3: phase 3 study of lasofoxifene plus abemaciclib to treat ER+/HER2-, ESR1-mutated, metastatic breast cancer. Future Oncol. 2025 May;21(11):1317-1324. doi: 10.1080/14796694.2025.2481825. Epub 2025 Apr 13.

MeSH Terms

Conditions

Breast Neoplasms

Interventions

LasofoxifeneabemaciclibFulvestrant

Condition Hierarchy (Ancestors)

Neoplasms by SiteNeoplasmsBreast DiseasesSkin DiseasesSkin and Connective Tissue Diseases

Intervention Hierarchy (Ancestors)

EstradiolEstrenesEstranesSteroidsFused-Ring CompoundsPolycyclic CompoundsEstradiol CongenersGonadal Steroid HormonesGonadal HormonesHormonesHormones, Hormone Substitutes, and Hormone Antagonists

Central Study Contacts

Simon Daggett - Senior Vice President, Clinical Operations

CONTACT

Study Design

Study Type
interventional
Phase
phase 3
Allocation
RANDOMIZED
Masking
NONE
Purpose
TREATMENT
Intervention Model
PARALLEL
Model Details: open label, randomized, parallel-group, multicenter study
Sponsor Type
INDUSTRY
Responsible Party
SPONSOR

Study Record Dates

First Submitted

January 13, 2023

First Posted

January 25, 2023

Study Start

October 31, 2023

Primary Completion (Estimated)

April 1, 2027

Study Completion (Estimated)

April 1, 2028

Last Updated

April 21, 2026

Record last verified: 2026-04

Data Sharing

IPD Sharing
Will not share

Locations