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Sacituzumab tirumotecan

Phase 3

Endometrial Cancer | Monoclonal antibody | Oncology |Merck & Company, Inc.|Last Updated: Apr 3, 2026

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedACTIVE_CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment710
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT06132958Sacituzumab Tirumotecan (MK-2870) in Post Platinum and Post Immunotherapy Endometrial Cancer (MK-2870-005)PHASE3 ACTIVE NOT_RECRUITING 710Dec 6, 2023Jan 10, 2028Apr 3, 2026241 United States, Argentina +29
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Study Endpoints
Primary Endpoints
Progression-free Survival (PFS) per Response Evaluation Criteria in Solid Tumors (RECIST) 1.1 as Assessed by Blinded Independent Central Review (BICR)
Up to approximately 27 months

PFS is defined as the time from randomization to the first documented disease progression per RECIST 1.1 based on BICR or death due to any cause, whichever occurs first.

Overall Survival (OS)
Up to approximately 48 months

OS is defined as the time from randomization to death due to any cause.

Secondary Endpoints
Objective Response Rate (ORR) per RECIST 1.1 as Assessed by BICR
Up to approximately 27 months
Duration of Response (DOR) per RECIST 1.1 as Assessed by BICR
Up to approximately 27 months
Number of Participants Who Experience One or More Adverse Events (AEs)
Up to approximately 48 months
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Study Design & Arms
AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Sacituzumab tirumotecanEXPERIMENTALParticipants will receive 4 mg/kg of sacituzumab tirumotecan via intravenous (IV) infusion on Day 1 of each 14-day cycle.
ChemotherapyACTIVE_COMPARATORParticipants will receive 60 mg/m\^2 of doxorubicin by IV infusion on Day 1 of each 21-day cycle; or 80 mg/m\^2 of paclitaxel by IV infusion on Days 1, 8, and 15 of each 28-day cycle. Participants who experience either a severe hypersensitivity reaction to paclitaxel or an AE requiring discontinuation of paclitaxel may receive Nab-paclitaxel.
Interventions
NameTypeDescription
Sacituzumab tirumotecanBIOLOGICAL4 mg/kg of sacituzumab tirumotecan by IV infusion
DoxorubicinDRUG60 mg/m\^2 of doxorubicin by IV Infusion
PaclitaxelDRUG80 mg/m\^2 of paclitaxel by IV infusion
Nab-paclitaxelDRUG100 mg/m\^2 of nab-paclitaxel by IV infusion
Rescue medicationsDRUGParticipants will receive the following rescue medications per approved product label before sacituzumab tirumotecan infusion: Histamine-1 (H1) receptor antagonist, histamine-2 (H2) receptor antagonist, acetaminophen or equivalent, dexamethasone or equivalent, and steroid mouthwash (dexamethasone or equivalent).
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Eligibility Criteria
Age Range18 Years — N/A
SexFEMALE
Healthy VolunteersNo
Study Sites241

The main inclusion and exclusion criteria include but are not limited to the following: Inclusion Criteria: * Has a histologically-confirmed diagnosis of endometrial carcinoma or carcinosarcoma. * Has radiographically evaluable disease, either measurable or nonmeasurable per response evaluation cr...

Countries:United StatesArgentinaAustraliaAustriaBelgiumBrazilCanadaChileChinaCzechiaDenmarkFinlandFranceGermanyGreeceIrelandIsraelItalyJapanMalaysiaMexicoNetherlandsNorwayPolandPuerto RicoSingaporeSouth KoreaSpainSwedenSwitzerlandUnited Kingdom
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Competitive Landscape -Endometrial Cancer 113 trials
CompanyTickerTrialsLead PhaseDrugs
Merck & Co., Inc.MRK6PHASE3Sacituzumab tirumotecan, Doxorubicin, Paclitaxel, Nab-paclitaxel, Pembrolizumab
AstraZeneca PLCAZN14PHASE3olaparib, durvalumab, Carboplatin, Paclitaxel, Durvalumab + Chemotherapy phase
Gilead Sciences, Inc.GILD2PHASE3Sacituzumab govitecan-hziy, Doxorubicin, Paclitaxel
GSK plc Sponsored ADRGSK3PHASE3Mocertatug rezetecan, Paclitaxel, Doxorubicin, Dostarlimab, Carboplatin
BioNTech SE Sponsored ADRBNTX1PHASE3BNT323/DB-1303, Doxorubicin, Paclitaxel, Docetaxel
Genmab A/S Sponsored ADRGMAB3PHASE3Rina-S, IC, GEN1047 is a bispecific antibody that induces T-cell mediated cytotoxicity of B7H4-positive tumor cells., Carboplatin, Bevacizumab
Karyopharm Therapeutics, Inc.KPTI1PHASE3Selinexor
Pfizer Inc.PFE4PHASE2tucatinib, trastuzumab, fulvestrant, disitamab vedotin, PF-08052666
HUTCHMED (China) Limited Sponsored ADRHCM1PHASE3fruquintinib, sintilimab, paclitaxel, doxorubicin
Eli Lilly and CompanyLLY5PHASE1LY3537982, Pembrolizumab, Cetuximab, Pemetrexed, Cisplatin
Incyte CorporationINCY1PHASE2retifanlimab, epacadostat, pemigatinib, INCAGN02385, INCAGN02390
Jazz Pharmaceuticals Public Limited CompanyJAZZ2PHASE2Zanidatamab
Corcept Therapeutics Incorporated.CORT1PHASE2Relacorilant once daily, Nab-paclitaxel /m^2, Bevacizumab /kg
Xencor, Inc.XNCR2PHASE2vudalimab, XmAb541
Acrivon Therapeutics, Inc.ACRV1PHASE2ACR-368, Gemcitabine
MacroGenics, Inc.MGNX2PHASE2Lorigerlimab, MGC026 Dose Escalation
Iovance Biotherapeutics IncIOVA1PHASE2Lifileucel
Regeneron Pharmaceuticals, Inc.REGN2PHASE1REGN5668, Cemiplimab, Ubamatamab, Sarilumab, Tocilizumab
IDEAYA Biosciences, Inc.IDYA2PHASE1IDE-161, Pembrolizumab, IDE034
Bristol-Myers Squibb CompanyBMY1PHASE1BMS-986463
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Recent Changes (Last 90 Days)
MEDIUMMay 26, 2026NCT06132958primaryCompletionDate: changed
LOWMay 24, 2026NCT06132958studyFirstPostDate: changed