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LY3295668 Erbumine

Phase 1

Neuroblastoma | Small molecule | Oncology |Eli Lilly and Company|Trials Updated: Aug 21, 2026

LY3295668 Erbumine development status

Highest phase Phase 1
Registered trials 3 across 1 sponsor since Apr 2019

Success Probability

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Market & Valuation

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Trial Design

RandomizedCONTROLLED
Total Trials3
Total Enrollment124

FDA Designations

No designations recorded

LY3295668 Erbumine clinical trials

LY3295668 Erbumine · 3 trials · 3 indications

Phase 1 3
NCT04106219A Study of LY3295668 Erbumine in Participants With Relapsed/Refractory NeuroblastomaNeuroblastoma
ACTIVE NOT_RECRUITING71 Analytics
NCT03955939A Study of LY3295668 Erbumine in Participants With Breast Cancer That Has Spread to Other Parts of the BodyMetastatic Breast Cancer
COMPLETED5 Analytics
NCT03898791A Study of LY3295668 Erbumine in Participants With Extensive-stage Small-Cell Lung CancerSmall Cell Lung Cancer
COMPLETED48 Analytics
PHASE1ACTIVE NOT_RECRUITING
A Study of LY3295668 Erbumine in Participants With Relapsed/Refractory Neuroblastoma
NeuroblastomaUnlock trial analytics
PHASE1COMPLETED
A Study of LY3295668 Erbumine in Participants With Breast Cancer That Has Spread to Other Parts of the Body
Metastatic Breast CancerUnlock trial analytics
PHASE1COMPLETED
A Study of LY3295668 Erbumine in Participants With Extensive-stage Small-Cell Lung Cancer
Small Cell Lung CancerUnlock trial analytics

Study Endpoints

Primary Endpoints

Number of Participants with Dose Limiting Toxicities (DLTs)
Baseline through Cycle 2 (28 Day Cycle)

Number of Participants with DLTs

Overall Response Rate (ORR): Percentage of Participants Who Achieve Complete Response (CR) or Partial Response (PR)
Baseline through Measured Progressive Disease (Estimated up to 5 Years)

ORR

Duration of Response (DoR)
Date of CR or PR to Date of Disease Progression or Death Due to Any Cause (Estimated up to 5 Years)

DoR

Number of Participants with Dose Reductions
Baseline through Cycle 1 (28 Day Cycle)
Part II: Number of Participants with Dose Limiting Toxicities (DLTs)
Baseline through Cycle 1 (28 Day Cycle)

Part II: Number of Participants with DLTs

Objective Response Rate (ORR): Percentage of Participants Who Achieve Complete Response (CR) or Partial Response (PR)
Baseline through Measured Progressive Disease (Estimated up to 20 Months)

ORR: Percentage of participants who achieve CR or PR

Pharmacokinetics (PK): Area Under the Concentration Time Curve (AUC) of LY3295668 Erbumine
Predose Cyce 1 Day 1 through Cycle 2 Day 1 (28 Day Cycles)

PK: AUC of LY3295668 Erbumine

Secondary Endpoints

Pharmacokinetics (PK): Area Under the Concentration Time Curve (AUC) of LY3295668
Cycle 1 Day 1 through Cycle 1 Day 15 (28 Day Cycles)
PK: AUC of LY3295668 in Combination with Topotecan and Cyclophosphamide
Cycle 1 Day 1 through Cycle 1 Day 15 (28 Day Cycles)
Best Overall Response (BOR): Percentage of Participants with CR, PR, Stable Disease (SD), or Progressive Disease (PD)
Baseline to Date of Objective Disease Progression (Estimated up to 5 Years)
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Study Design & Arms

AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
LY3295668 Erbumine EscalationEXPERIMENTALLY3295668 Erbumine given orally.
LY3295668 Erbumine + Topotecan + Cyclophosphamide EscalationEXPERIMENTALLY3295668 Erbumine given orally and topotecan and cyclophosphamide given intravenously (IV).
LY3295668 Erbumine ExpansionEXPERIMENTALLY3295668 Erbumine given orally.
LY3295668 Erbumine + Topotecan + Cyclophosphamide ExpansionEXPERIMENTALLY3295668 Erbumine given orally and topotecan and cyclophosphamide given IV.
LY3295668 Erbumine Part AEXPERIMENTALLY3295668 erbumine administered orally (Part I). Approximately the first 10 participants enrolled in this arm will be administered midazolam.
LY3295668 Erbumine Part BEXPERIMENTALLY3295668 erbumine administered orally (Part I). Approximately the first 10 participants enrolled in this arm will be administered midazolam.
LY3295668 Erbumine + Endocrine Therapy Cohort 1EXPERIMENTALLY3295668 erbumine administered orally and endocrine therapy administered according to package label (Part II).
LY3295668 Erbumine + Endocrine Therapy Continuation Part CEXPERIMENTALLY3295668 erbumine administered orally and endocrine therapy administered according to package label (Part I).
LY3295668 Erbumine + Endocrine Therapy Switch Part DEXPERIMENTALLY3295668 erbumine administered orally and endocrine therapy administered according to package label (Part I).
LY3295668 Erbumine Cohort AEXPERIMENTALLY3295668 erbumine administered orally.
LY3295668 Erbumine Cohort BEXPERIMENTALLY3295668 erbumine administered orally.
LY3295668 Part JPEXPERIMENTALLY3295668 erbumine administered orally.

Interventions

NameTypeDescription
LY3295668 ErbumineDRUGAdministered orally.
TopotecanDRUGAdministered IV.
CyclophosphamideDRUGAdministered IV.
Endocrine therapyDRUGAdministered according to label instructions.
MidazolamDRUGAdministered orally.
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Eligibility Criteria

Age Range2 Years to 21 Years
SexALL
Healthy VolunteersNo
Study Sites17

Inclusion Criteria: * Participants must have relapsed/refractory neuroblastoma and have active disease in at least one site: bone, bone marrow or soft tissue. Participants must be able to submit an archival sample of tissue. * Participants must be able to swallow capsules. Exclusion Criteria: * P...

Countries:United StatesAustraliaBelgiumFranceGermanyItalyJapanSpainUnited KingdomSouth KoreaTurkey (Türkiye)
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Recent Changes (Last 90 Days)

MEDIUMAug 21, 2026NCT04106219Completion: 2026-08 → 2027-08
MEDIUMAug 21, 2026NCT04106219Completion: 2026-08 → 2027-08

Frequently asked questions about LY3295668 Erbumine

What is LY3295668 Erbumine?

LY3295668 Erbumine is an investigational small molecule being developed by Eli Lilly and Company for the treatment of several types of cancer. It is being studied in metastatic breast cancer, neuroblastoma, and small cell lung cancer. It is not yet approved and remains in Phase 1 clinical development.

What is LY3295668 Erbumine used for?

LY3295668 Erbumine is being studied for metastatic breast cancer, neuroblastoma, and small cell lung cancer. These are the three cancer types evaluated in its clinical program. The drug is investigational, so it is not approved for any indication and is available only through clinical trials.

Who makes LY3295668 Erbumine?

LY3295668 Erbumine is developed by Eli Lilly and Company, which trades on the New York Stock Exchange under the ticker LLY. Lilly is the sponsor of the clinical trials evaluating the compound in neuroblastoma, metastatic breast cancer, and small cell lung cancer.

What phase is LY3295668 Erbumine in?

LY3295668 Erbumine is in Phase 1 clinical development. All of its trials are Phase 1 studies, including one active trial in relapsed or refractory neuroblastoma and completed Phase 1 studies in metastatic breast cancer and extensive-stage small cell lung cancer. It is not FDA approved.

What clinical trials is LY3295668 Erbumine in?

The active trial is NCT04106219, a Phase 1 study of LY3295668 Erbumine in participants with relapsed or refractory neuroblastoma, enrolling 71 patients across the United States, Australia, Belgium, France, Germany, Italy, Japan, Spain, and the United Kingdom. Completed Phase 1 trials include NCT03955939 in metastatic breast cancer and NCT03898791 in extensive-stage small cell lung cancer.

Is LY3295668 Erbumine biomarker selected?

Yes. The LY3295668 Erbumine clinical program is biomarker selected, meaning trial enrollment is guided by a molecular biomarker rather than an unselected patient population. The Phase 1 studies in neuroblastoma, metastatic breast cancer, and small cell lung cancer all use this biomarker-based approach to identify appropriate participants.