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Instituto San Marcos | San Juan, Argentina

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A Study of Imlunestrant Versus Standard Endocrine Therapy in Participants With Early Breast Cancer (EMBER-4)

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Lilly

Status and phase

Enrolling
Phase 3

Conditions

Breast Neoplasms

Treatments

Drug: Anastrozole
Drug: Tamoxifen
Drug: Letrozole
Drug: Imlunestrant
Drug: Exemestane

Study type

Interventional

Funder types

Industry

Identifiers

NCT05514054
2022-501007-28 (EudraCT Number)
18459
J2J-MC-JZLH (Other Identifier)

Details and patient eligibility

About

The main purpose of this study is to measure how well imlunestrant works compared to standard hormone therapy in participants with early breast cancer that is estrogen receptor positive (ER+) and human epidermal receptor 2 negative (HER2-). Participants must have already taken endocrine therapy for two to five years and must have a higher-than-average risk for their cancer to return. Study participation could last up to 10 years.

Enrollment

6,000 estimated patients

Sex

All

Ages

18+ years old

Volunteers

No Healthy Volunteers

Inclusion criteria

  • Have a diagnosis of ER+, HER2- early-stage, resected, invasive breast cancer without evidence of distant metastasis.
  • Participants must have received at least 24 months but not more than 60 months of any adjuvant ET, from time of adjuvant ET initiation.
  • Participants may have received (neo) adjuvant chemotherapy and/or targeted therapy with a CDK4/6- or PARP- inhibitor.
  • Must have an increased risk of disease recurrence based on clinical-pathological risk features.
  • Have a Performance Status of 0 or 1 on the Eastern Cooperative Oncology Group scale.
  • Have adequate organ function.

Exclusion criteria

  • Have any evidence of metastatic disease (including contralateral ALN) or inflammatory breast cancer at primary breast cancer diagnosis.
  • Participants with more than a 6-month consecutive gap in therapy during the course of prior adjuvant ET.
  • Participants who have completed or discontinued prior adjuvant ET >6 months prior to screening.
  • Participants with a history of previous breast cancer are excluded, with the exception of ipsilateral DCIS treated by locoregional therapy alone ≥5 years ago.
  • Pregnant, breastfeeding, or expecting to conceive or father children within the projected duration of the trial, starting with the screening visit through 180 days after the last dose of study intervention.
  • Participant has previously received ET of any duration for breast cancer prevention (tamoxifen or AIs) or raloxifene.
  • Participants with a history of any other cancer.
  • Have serious preexisting medical conditions that, in the judgment of the investigator, would preclude participation in this study.

Trial design

Primary purpose

Treatment

Allocation

Randomized

Interventional model

Parallel Assignment

Masking

None (Open label)

6,000 participants in 2 patient groups

Imlunestrant
Experimental group
Description:
Imlunestrant administered orally.
Treatment:
Drug: Imlunestrant
Investigator's Choice of Endocrine Therapy
Active Comparator group
Description:
Investigator's choice of tamoxifen, anastrozole, letrozole, or exemestane administered per local approved label.
Treatment:
Drug: Exemestane
Drug: Letrozole
Drug: Tamoxifen
Drug: Anastrozole

Trial contacts and locations

706

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Central trial contact

There may be multiple sites in this clinical trial. 1-877-CTLILLY (1-877-285-4559) or

Data sourced from clinicaltrials.gov

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