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LY4336619

Phase 1

Endometrial Neoplasms | Small Molecules | Other |Eli Lilly and Company|Trials Updated: Nov 10, 2026

LY4336619 development status

Highest phase Phase 1
Registered trials 1 across 1 sponsor since Nov 2026

Success Probability

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Market & Valuation

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Trial Design

CONTROLLED
Total Trials1
Total Enrollment370

FDA Designations

No designations recorded

LY4336619 clinical trials

LY4336619 · 1 trial · 6 indications

Phase 1 1
NCT07928258A Study of LY4336619 in Adult Participants With Advanced Solid TumorsEndometrial Neoplasms
NOT YET_RECRUITING370 Analytics
PHASE1NOT YET_RECRUITING
A Study of LY4336619 in Adult Participants With Advanced Solid Tumors
Endometrial NeoplasmsUnlock trial analytics

Study Endpoints

Primary Endpoints

Number of Participants with Dose-Limiting Toxicities (DLTs)
From Cycle 1 Day 1 through Cycle 2 Day 1 (approximately 21 days)
Objective Response Rate (ORR) of LY4336619 in the Dose Expansion Arms
Up to approximately 2 years

Investigator-assessed ORR per Response Evaluation Criteria in Solid Tumors (RECIST) v1.1.

Secondary Endpoints

Pharmacokinetics (PK) of LY4336619: Maximum Concentration (Cmax)
Up to approximately 2 years
PK of LY4336619: Area under the Concentration-time Curve (AUC)
Up to approximately 2 years
PK of Sofe-M in the Combination Cohorts: Cmax
Up to approximately 2 years
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
LY4336619 Dose EscalationEXPERIMENTALEscalating doses of LY4336619 administered intravenously (IV)
LY4336619 Dose OptimizationEXPERIMENTALComparing 2 or more doses (evaluated during dose escalation) of LY4336619 administered IV
LY4336619 and Sofetabart Mipitecan (Sofe-M) CombinationEXPERIMENTALComparing LY4336619 in combination with Sofe-M administered IV
LY4336619 Dose ExpansionEXPERIMENTALLY4336619 administered IV

Interventions

NameTypeDescription
LY4336619DRUGAdministered IV
Sofetabart Mipitecan (Sofe-M)DRUGAdministered IV
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites23

Inclusion Criteria: * Have histological diagnosis of locally advanced or metastatic solid tumor malignancy. * Have a life expectancy of at least 12 weeks as judged by the investigator. * Must be an appropriate candidate for study treatment. Study treatment is considered appropriate where approved m...

Countries:United StatesFranceJapanSpainUnited Kingdom
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Recent Changes (Last 90 Days)

LOWNov 10, 2026NCT07928258NEW_TRIAL: changed

Frequently asked questions about LY4336619

What is LY4336619?

LY4336619 is an investigational small molecule being developed by Eli Lilly and Company for endometrial neoplasms and other advanced solid tumors. It is in Phase 1 clinical development and has not been approved for any use. It is being studied in adults with advanced solid tumors, including endometrial, ovarian, germ cell, non-small-cell lung, and stomach cancers.

What is LY4336619 used for in endometrial neoplasms?

LY4336619 is being studied as a treatment for endometrial neoplasms and other advanced solid tumors in adults. It is investigational and has not been approved for endometrial cancer or any other indication. Its only registered trial enrolls participants with endometrial neoplasms alongside ovarian, germ cell, non-small-cell lung, and stomach cancers.

Who makes LY4336619?

Eli Lilly and Company, which trades on the New York Stock Exchange under the ticker LLY, is developing LY4336619. Lilly is the sponsor of the Phase 1 study of the compound in advanced solid tumors. The drug is an investigational small molecule and is not yet available commercially.

What phase is LY4336619 in?

LY4336619 is in Phase 1 clinical development. It is investigational and has not been approved by the FDA or any other regulator. The single registered trial is a Phase 1 study in adult participants with advanced solid tumors that has not yet begun recruiting.

What clinical trials is LY4336619 in?

LY4336619 is being studied in one trial, NCT07928258, titled A Study of LY4336619 in Adult Participants With Advanced Solid Tumors. The Phase 1 trial is not yet recruiting and plans to enroll 370 participants aged 18 and older across the United States, France, Japan, Spain, and the United Kingdom.

What cancers is the LY4336619 trial studying?

The NCT07928258 trial enrolls adults with endometrial neoplasms, ovarian neoplasms, germ cell and embryonal neoplasms, non-small-cell lung carcinoma, and stomach neoplasms. It is a controlled Phase 1 study with an estimated enrollment of 370 participants. Participants must be at least 18 years old, and the study accepts all sexes.