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A Study of LY3484356 in Participants With Advanced or Metastatic Breast Cancer or Endometrial Cancer (EMBER)

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Lilly

Status and phase

Active, not recruiting
Phase 1

Conditions

Endometrial Cancer
Breast Cancer
Metastatic Breast Cancer
Advanced Breast Cancer

Treatments

Drug: Trastuzumab
Drug: Everolimus
Drug: Alpelisib
Drug: Pertuzumab
Drug: Aromatase Inhibitor (AI)
Drug: Abemaciclib
Drug: LY3484356

Study type

Interventional

Funder types

Industry

Identifiers

NCT04188548
J2J-MC-JZLA (Other Identifier)
17502
2019-003581-41 (EudraCT Number)

Details and patient eligibility

About

The reason for this study is to see if the study drug LY3484356 alone or in combination with other anticancer therapies is safe and effective in participants with advanced or metastatic breast cancer or endometrial cancer.

Enrollment

500 estimated patients

Sex

All

Ages

18+ years old

Volunteers

No Healthy Volunteers

Inclusion criteria

All study parts:

  • Participants must be willing to provide adequate archival tissue sample
  • Participants must be willing to use highly effective birth control
  • Participants must have adequate organ function
  • Participants must be able to swallow capsules

Dose escalation- Participants must have one of the following:

  • Parts A and B: ER+ HER2- breast cancer with evidence of locally advanced unresectable or metastatic disease who have had the following:
  • Part A: may have had up to 1 prior regimen of any kind for in the advanced/metastatic setting and no prior cyclin-dependent kinase 4/6 (CDK4/6) inhibitor therapy.
  • Part B: may have had up to 2 prior regimens, no more than 1 of which may be endocrine therapy in the advanced/metastatic setting, and must have received a prior CDK4/6 inhibitor
  • Cohort E4: No prior everolimus.
  • Cohort E5: No prior alpelisib and must have a phosphatidylinositol 3-kinase catalytic α (PIK3Cα) mutation as determined by local testing.
  • Part C: ER+, human epidermal growth factor receptor 2 positive (HER2+) breast cancer with evidence of locally advanced unresectable or metastatic disease who have had at least 2 HER2-directed therapies in any setting.
  • Part D: ER+, EEC that has progressed after platinum containing chemotherapy and no prior fulvestrant or aromatase inhibitor therapy.
  • Part E: ER+ and HER2+ breast cancer with evidence of locally advanced, unresectable, or metastatic disease.
  • Part E: Participants must have received induction taxane chemotherapy combined with trastuzumab + pertuzumab as first-line treatment for advanced/metastatic disease and must not have progressed on this regimen.
  • Part E: Participants must not have received more than 1 HER2-directed regimen or any endocrine therapy for advanced disease or any prior CDK4/6 inhibitor therapy.

Participants with ER+/HER2- breast cancer enrolled in this study must have had evidence of clinical benefit while on endocrine therapy for at least 24 months in the adjuvant setting or at least 6 months in the advanced/metastatic setting or have untreated de novo metastatic breast cancer

Exclusion criteria

  • Participants must not have certain infections such as hepatitis or tuberculosis or HIV that are not well controlled
  • Participants must not have another serious medical condition
  • Participants must not have cancer of the central nervous system that is unstable
  • Participants must not be pregnant or breastfeeding

Trial design

Primary purpose

Treatment

Allocation

Randomized

Interventional model

Parallel Assignment

Masking

None (Open label)

500 participants in 8 patient groups

Dose Escalation LY3484356
Experimental group
Description:
LY3484356 given orally.
Treatment:
Drug: LY3484356
Part A: Dose Expansion: LY3484356 + Abemaciclib +/- AI
Experimental group
Description:
LY3484356 and abemaciclib given orally in combination with or without Aromatase Inhibitor (AI) of physician's choice (Anastrozole, Exemestane, or Letrozole) administered orally.
Treatment:
Drug: Abemaciclib
Drug: LY3484356
Drug: Aromatase Inhibitor (AI)
Part B: Dose Expansion: Cohort E3: LY3484356
Experimental group
Description:
LY3484356 given orally.
Treatment:
Drug: LY3484356
Part B: Dose Expansion: Cohort E4: LY3484356 + Everolimus
Experimental group
Description:
LY3484356 and everolimus given orally.
Treatment:
Drug: LY3484356
Drug: Everolimus
Part B: Dose Expansion: Cohort E5: LY3484356 + Alpelisib
Experimental group
Description:
LY3484356 and alpelisib given orally.
Treatment:
Drug: LY3484356
Drug: Alpelisib
Part C:Dose Expansion: LY3484356 + Trastuzumab +/- Abemaciclib
Experimental group
Description:
LY3484356 administered orally in combination with trastuzumab intravenously with or without Abemaciclib.
Treatment:
Drug: Abemaciclib
Drug: LY3484356
Drug: Trastuzumab
Part D: Dose Expansion: LY3484356 +/- Abemaciclib
Experimental group
Description:
LY3484356 and Abemaciclib given orally with trastuzumab administered intravenously.
Treatment:
Drug: Abemaciclib
Drug: LY3484356
Part E: Dose Expansion: LY3484356 + Trastuzumab + Pertuzumab
Experimental group
Description:
LY3484356 administered orally in combination with trastuzumab and pertuzumab administered intravenously.
Treatment:
Drug: LY3484356
Drug: Pertuzumab
Drug: Trastuzumab

Trial contacts and locations

74

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Data sourced from clinicaltrials.gov

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