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Sofetabart Mipitecan

Phase 3

Ovarian Neoplasms | Small molecule | Oncology |Eli Lilly and Company|Trials Updated: Oct 8, 2026

Sofetabart Mipitecan development status

Highest phase Phase 3
Registered trials 2 across 1 sponsor since May 2024

Sofetabart Mipitecan target and mechanism

ModalitySmall molecule

Also known as Sofe-M, LY4170156

Success Probability

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Market & Valuation

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Trial Design

RandomizedCONTROLLEDDMCBiomarker
Total Trials2
Total Enrollment2,205

FDA Designations

BREAKTHROUGH_THERAPY

Sofetabart Mipitecan clinical trials

Sofetabart Mipitecan · 2 trials · 10 indications

Phase 3 1Phase 1 1
NCT07213804A Three-Part Phase 3 Study of Sofetabart Mipitecan in Participants With Platinum-Resistant (Part A) and Platinum-Sensitive (Parts B and C) Ovarian CancerOvarian Neoplasms
RECRUITING1,630 Analytics
PHASE3RECRUITING
A Three-Part Phase 3 Study of Sofetabart Mipitecan in Participants With Platinum-Resistant (Part A) and Platinum-Sensitive (Parts B and C) Ovarian Cancer
Ovarian NeoplasmsUnlock trial analytics

Study Endpoints

Primary Endpoints

Progression-free Survival (PFS) per Response Evaluation Criteria in Solid Tumors (RECIST) v1.1 by Investigator
Randomization to radiographic progression or death from any cause (up to 70 months)

PFS per Response Evaluation Criteria in Solid Tumors (RECIST) v1.1 by Investigator

PFS per Response Evaluation Criteria in Solid Tumors (RECIST) v1.1 by Blinded, Independent, Central Review (BICR)
Randomization to radiographic progression or death from any cause (up to 70 months)
Phase 1a: To determine the recommended phase 2 dose (RP2D) of Sofe-M (LY4170156)
1 Cycle (21 or 28 days)

Number of participants with dose-limiting toxicities (DLTs)

Phase 1a: To determine the RP2D or optimal dose of Sofe-M (LY4170156) with bevacizumab
1 Cycle (21 or 28 days)

Number of participants with DLTs

Phase 1a: To determine the RP2D or optimal dose of Sofe-M (LY4170156) with carboplatin
1 Cycle (21 or 28 days)

Number of participants with DLTs

Phase 1a: To determine the RP2D or optimal dose of Sofe-M (LY4170156) with pembrolizumab
1 Cycle (21 or 28 days)

Number of participants with DLTs

Phase 1b: To assess the antitumor activity of Sofe-M (LY4170156) Monotherapy: Overall response rate (ORR)
Up to Approximately 60 Months or 5 Years

ORR per investigator assessed Response Evaluation Criteria in Solid Tumors, version 1.1 (RECIST 1.1)

Phase 2: To assess the antitumor activity of Sofe-M (LY4170156) Monotherapy: ORR
Up to Approximately 60 Months or 5 Years

ORR per RECIST 1.1

Number of Participants with One or More Serious Adverse Event(s) (SAEs) Considered by the Investigator to be Related to Study Drug Administration
Up to Approximately 60 Months or 5 Years

A summary of SAEs regardless of causality, will be reported in the Reported Adverse Events module

Secondary Endpoints

Overall Survival (OS)
Randomization to date of death from any cause (up to 70 months)
PFS
Randomization to radiographic progression or death from any cause (up to 70 months)
Overall Response Rate (ORR): Proportion of Participants who Achieve a Best Overall Response (BOR) of Complete Response (CR) or Partial Response (PR)
Randomization to disease progression or death (up to 70 months)
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Study Design & Arms

AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Part A: Sofetabart MipitecanEXPERIMENTALAdministered intravenously (IV).
Part A: Chemotherapy or Mirvetuximab Soravtansine (MIRV)ACTIVE_COMPARATORInvestigator's Choice of Chemotherapy or MIRV given IV.
Part B: Sofetabart Mipitecan plus BevacizumabEXPERIMENTALAdministered IV.
Part B: Platinum-based Doublet Chemotherapy plus BevacizumabACTIVE_COMPARATORInvestigator's choice of platinum doublet chemotherapy IV followed by bevacizumab IV.
Part C: Sofetabart Mipitecan plus BevacizumabEXPERIMENTALAdministered IV
Part C: Platinum-based Doublet Chemotherapy plus BevacizumabACTIVE_COMPARATORInvestigator's choice of platinum doublet chemotherapy IV followed by bevacizumab IV.
Sofe-M (Dose-escalation, Cohort A1)EXPERIMENTALEscalating doses of Sofe-M administered intravenously (IV)
Sofe-M (Cohort A1 Parts A and C)EXPERIMENTALSofe-M administered IV
Sofe-M Alone or with Itraconazole. Drug-Drug Interaction (DDI) (Cohort A1: Arm B)EXPERIMENTALSofe-M administered IV and itraconazole administered orally
Sofe-M (Dose-optimization, Cohort A2)EXPERIMENTALComparing 2 or more doses (evaluated during dose escalation) of Sofe-M administered IV
Sofe-M (Enrichment Cohort A3)EXPERIMENTALMonotherapy administered IV
Sofe-M (Combination Cohort A4)EXPERIMENTALCombination with bevacizumab administered IV
Sofe-M (Combination Cohort A5)EXPERIMENTALCombination with carboplatin administered IV
Sofe-M Combination with Pembrolizumab (Dose-optimization Cohort A6)EXPERIMENTALComparing 2 or more doses (evaluated during dose escalation) of Sofe-M administered IV with pembrolizumab
Sofe-M Combination with carboplatin and optional bevacizumab (Dose-optimization Cohort A7)EXPERIMENTALComparing 2 or more doses (evaluated during dose escalation) of Sofe-M administered IV with or without bevacizumab
Sofe-M (Dose-expansion, Cohort B2-B4)EXPERIMENTALSofe-M administered IV
Sofe-M (Dose-expansion, Cohort B1)EXPERIMENTALSofe-M administered IV

Interventions

NameTypeDescription
Sofetabart MipitecanDRUGAdministered IV
PaclitaxelDRUGAdministered IV
TopotecanDRUGAdministered IV
GemcitabineDRUGAdministered IV
Pegylated liposomal doxorubicin (PLD)DRUGAdministered IV
MIRVDRUGAdministered IV
BevacizumabDRUGAdministered IV
CarboplatinDRUGAdministered IV
Sofe-MDRUGIntravenous
ItraconazoleDRUGoral
pembrolizumabDRUGIV
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites265

Inclusion Criteria: Part A, B, and C: * Have histologically confirmed high-grade serous or endometrioid ovarian, primary peritoneal, or fallopian tube cancer. * Have confirmed availability of tumor tissue block or slides * Have radiographic progression on or after most recent line of systemic anti...

Countries:United StatesAustraliaAustriaBelgiumBrazilCanadaChinaCzechiaDenmarkFranceGermanyGreeceHungaryIrelandItalyJapanMexicoNetherlandsNorwayPolandRomaniaSingaporeSouth KoreaSpainSwitzerlandTaiwanUnited Kingdom
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Recent Changes (Last 90 Days)

LOWOct 8, 2026NCT07213804lastUpdatePostDate: changed
LOWOct 8, 2026NCT07213804lastUpdatePostDate: changed
LOWOct 7, 2026NCT06400472lastUpdatePostDate: changed
LOWOct 7, 2026NCT06400472lastUpdatePostDate: changed
LOWSep 22, 2026NCT07213804lastUpdatePostDate: changed
LOWSep 22, 2026NCT07213804lastUpdatePostDate: changed
LOWSep 8, 2026NCT07213804lastUpdatePostDate: changed
LOWSep 8, 2026NCT07213804lastUpdatePostDate: changed
MEDIUMSep 4, 2026NCT06400472Enrollment: 495 → 575
MEDIUMSep 4, 2026NCT06400472Enrollment: 495 → 575
LOWAug 21, 2026NCT07213804lastUpdatePostDate: changed
LOWAug 21, 2026NCT07213804lastUpdatePostDate: changed
LOWAug 6, 2026NCT07213804lastUpdatePostDate: changed
LOWAug 6, 2026NCT07213804lastUpdatePostDate: changed
LOWJul 24, 2026NCT07213804lastUpdatePostDate: changed
LOWJul 24, 2026NCT07213804lastUpdatePostDate: changed

Frequently asked questions about Sofetabart Mipitecan

What is Sofetabart Mipitecan?

Sofetabart Mipitecan is an investigational small molecule oncology drug being developed by Eli Lilly and Company for the treatment of ovarian neoplasms. It is also known as Sofe-M. It is currently in Phase 3 clinical development and has received Breakthrough Therapy designation from the FDA.

What is Sofetabart Mipitecan used for?

Sofetabart Mipitecan is being studied for ovarian neoplasms, including platinum-resistant and platinum-sensitive ovarian cancer. Clinical trials also include fallopian tube neoplasms, peritoneal neoplasms, and metastatic disease, as well as a Phase 1 study in selected advanced solid tumors such as endometrial, cervical, and lung cancers.

Who makes Sofetabart Mipitecan?

Sofetabart Mipitecan is being 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 development program for the drug.

What phase is Sofetabart Mipitecan in?

Sofetabart Mipitecan is in Phase 3 clinical development. It is investigational and has not been approved by the FDA. The Phase 3 program is actively recruiting, and the drug has received Breakthrough Therapy designation from the FDA for its development in ovarian neoplasms.

What clinical trials is Sofetabart Mipitecan in?

Sofetabart Mipitecan is being evaluated in two active recruiting trials. NCT07213804 is a three-part Phase 3 study in platinum-resistant and platinum-sensitive ovarian cancer with planned enrollment of 1,630 participants. NCT06400472 is a Phase 1 study in selected advanced solid tumors with planned enrollment of 575 participants.

Is Sofetabart Mipitecan the same as Sofe-M?

Yes, Sofetabart Mipitecan is also known as Sofe-M. Both names refer to the same investigational small molecule developed by Eli Lilly and Company. The Phase 1 trial in selected advanced solid tumors is listed under the Sofe-M name.