Skip to content

EMBER-3: A Study of Imlunestrant, Investigator's Choice of Endocrine Therapy, and Imlunestrant plus Abemaciclib in Patients with ER+, HER2- Advanced Breast Cancer

EMBER-3: A Phase 3, Randomized, Open-Label Study of Imlunestrant, Investigator's Choice of Endocrine Therapy, and Imlunestrant Plus Abemaciclib in Patients With Estrogen Receptor Positive, HER2 Negative Locally Advanced or Metastatic Breast Cancer Previously Treated With Endocrine Therapy - J2J-OX-JZLC

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
JPRN
Registry ID
JPRN-jRCT2051210102
Enrollment
860
Registered
2021-10-08
Start date
2021-12-10
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Breast Neoplasms / Neoplasm Metastasis

Interventions

Drug: Imlunestrant, Administered orally. Drug: Exemestane, Administered orally. Drug: Fulvestrant, Administered IM. Drug: Abemaciclib, Administered orally.

Sponsors

Masaki Takeshi
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Have a diagnosis of ER+, HER2- locally advanced or metastatic breast cancer 2. Have disease that has demonstrated progression on or after an aromatase inhibitor alone or in combination with a cyclin-dependent kinase (CDK)4/6 inhibitor.(Participants are expected to have received prior treatment with a CDK4/6 inhibitor, if this treatment is approved and can be reimbursed) 3. Must be deemed appropriate for treatment with endocrine therapy 4. If female, have a postmenopausal status by natural or surgical means or by ovarian function suppression 5. Have RECIST evaluable disease (measurable disease and/or nonmeasurable bone-only disease) 6. Have a performance status of 0 or 1 on the Eastern Cooperative Oncology Group scale (Oken et al. 1982) 7. Have adequate renal, hematologic, and hepatic organ function 8. Must be able to swallow capsules/tablets

Exclusion criteria

Exclusion criteria: 1. Have received prior treatment with chemotherapy (except for neoadjuvant/ adjuvant chemotherapy), fulvestrant, or any investigational-ER-directed therapy (including SERDs and non-SERDs), any PI3K-, mTOR- or AKT- inhibitor 2. Have visceral crisis, lymphangitic spread within the lung, or any evidence of leptomeningeal disease. 3. Have symptomatic or untreated brain metastasis. 4. Have serious preexisting medical conditions that, in the judgment of the investigator, would preclude participation in this study 5. Known allergic reaction against any of the components of the study treatment

Design outcomes

Primary

MeasureTime frame
1. Progression Free Survival(PFS) in the Intent-to-Treat (ITT) Population PFS by investigator assessment in the ITT population 2.PFS in the Estrogen Receptor 1 (ESR1)-mutation Detected Population PFS by investigator assessment in ESR1-mutation detected population

Countries

Argentina, Australia, Austria, Belgium, Brazil, China, Czech Republic, France, Germany, Greece, India, Italy, Japan, Mexico, Netherlands, Russia, South Korea, Spain, Taiwan, Turkey, Ukraine, United State

Contacts

Public ContactTrial Guide Call Center

Eli Lilly Japan K.K.

LTG_CallCenter@lists.lilly.com+81-120-023-812

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026