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Completed Phase 2 Interventional

Evaluation of Lasofoxifene Combined With Abemaciclib in Advanced or Metastatic ER+/HER2- Breast Cancer With an ESR1 Mutation

ClinicalTrials.gov ID: NCT04432454

Public ClinicalTrials.gov record NCT04432454. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Oct 20, 2026, 2:38 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Official title

An Open-label, Multicenter Study Evaluating the Safety of Lasofoxifene in Combination With Abemaciclib for the Treatment of Pre- and Postmenopausal Women With Locally Advanced or Metastatic ER+/HER2- Breast Cancer and Have an ESR1 Mutation ( ELAINEII )

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

This is an open-label, multicenter, single-arm safety study evaluating the safety and tolerability of the lasofoxifene and abemaciclib combination for the treatment of pre- and postmenopausal women with locally advanced or metastatic ER+/HER2- breast cancer who have disease progression on first and/or 2nd lines of hormonal treatment for metastatic disease and have an ESR1 mutation.

Study identification

NCT ID
NCT04432454
Recruitment status
Completed
Study type
Interventional
Phase
Phase 2
Lead sponsor
Sermonix Pharmaceuticals Inc.
Industry
Enrollment
29 participants

Conditions and interventions

Eligibility (public fields only)

Age range
18 Years and older
Sex
Female
Healthy volunteers
Healthy volunteers not accepted

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Sep 29, 2020 (Actual)
Primary completion
Jan 28, 2025 (Actual)
Completion
Jan 28, 2025 (Actual)
Last update posted
Feb 13, 2025

2020 – 2025

United States locations

U.S. sites
16
U.S. states
12
U.S. cities
15
Facility City State ZIP Site status
University of Alabama at Birmingham (UAB) - Comprehensive Cancer Center Birmingham Alabama 35294-3300 —
Yuma Regional Medical Center Yuma Arizona 85364 —
Compassionate Cancer Care Med Group - Clinic Aid USA - Fountain Valley Fountain Valley California 92708 —
St. Joseph Health Santa Rosa California 95403 —
Mayo Jacksonville Jacksonville Florida 32224 —
Illinois Cancer Care Peoria Illinois 61704 —
Beacon Health System Memorial Regional Cancer Center South Bend Indiana 46601 —
Mayo Clinic Rochester Rochester Minnesota 55905 —
New Jersey Cancer Care, PA Belleville New Jersey 07109 —
Cleveland Clinic Cleveland Ohio 44195 —
The Ohio State University Comprehensive Cancer Center Columbus Ohio 43210 —
Mary Crowley Cancer Research Dallas Texas 75230 —
MD Anderson Cancer Center Houston Texas 77030-4009 —
Oncology Consultants, P.A. Houston Texas 77030 —
Hematology Oncology Associates of Fredericksburg Fredericksburg Virginia 22408 —
Northwest Medical Specialists, PLLC (NWMS) Tacoma Washington 98405 —

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT04432454, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted Feb 13, 2025 · Synced Oct 20, 2026

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Open the official record

The complete public registry record, listed eligibility criteria, and available contact information for NCT04432454 live on ClinicalTrials.gov.

View official ClinicalTrials.gov record →