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Ifinatamab deruxtecan

Phase 3

Prostate Cancer | Small molecule | Oncology |Merck & Company, Inc.|Last Updated: May 29, 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 Enrollment1,440
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT06925737A Clinical Study of Ifinatamab Deruxtecan (I-DXd) in People With Metastatic Prostate Cancer (MK-2400-001)PHASE3 RECRUITING 1,440May 13, 2025Jan 6, 2031May 29, 2026285 United States, Argentina +33
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Study Endpoints
Primary Endpoints
Overall Survival (OS)
Up to approximately 36 months

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

Radiographic Progression Free Survival (rPFS)
Up to approximately 36 months

rPFS is defined as the time from randomization to the first documented disease progression per prostate cancer working group (PCWG)-modifed Response Evaluation Criteria In Solid Tumors (RECIST) 1.1 by blinded independent central review (BICR) or death due to any cause, whichever occurs first.

Secondary Endpoints
Time to First Subsequent Therapy (TFST)
Up to approximately 36 months
Objective Response Rate (ORR)
Up to approximately 36 months
Duration of Response (DOR)
Up to approximately 36 months
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Study Design & Arms
AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
I-DXdEXPERIMENTALParticipants receive I-DXd 12mg/kg every 3 weeks (q3w)
DocetaxelACTIVE_COMPARATORParticipants receive docetaxel 75 mg/m\^2 q3w and prednisone 10 mg/day or per approved product label
Interventions
NameTypeDescription
Ifinatamab deruxtecanDRUGAdministered via intravenous (IV) infusion every 3 weeks (q3w) until disease progression, unacceptable adverse events (AEs), or other cessation of treatment
DocetaxelDRUGAdministered via IV infusion q3W until disease progression, unacceptable adverse events (AEs), or other cessation of treatment
PrednisoneDRUGOral tablet administered once per day or per approved product label
Rescue MedicationDRUGBefore administering each dose of I-DXd, premedication is required for prevention of nausea and vomiting with a 2 or 3 drug combination regimen (eg, corticosteroids with either a 5-HT3 receptor antagonist or an NK-1 receptor antagonist and other drugs as indicated) per approved product label
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Eligibility Criteria
Age Range18 Years — N/A
SexMALE
Healthy VolunteersNo
Study Sites285

Inclusion Criteria: The main inclusion criteria include but are not limited to the following: * Has histologically- or cytologically-confirmed adenocarcinoma of the prostate without small cell histology * Has prostate cancer progression while on androgen deprivation therapy (ADT) (or post bilatera...

Countries:United StatesArgentinaAustraliaAustriaBrazilChileChinaColombiaCzechiaDenmarkFranceGermanyGreeceGuatemalaHong KongIrelandIsraelItalyJapanMalaysiaMexicoNetherlandsNorwayPeruPolandSingaporeSouth AfricaSouth KoreaSpainSwedenSwitzerlandTaiwanThailandTurkey (Türkiye)United Kingdom
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Competitive Landscape -Prostate Cancer 259 trials
CompanyTickerTrialsLead PhaseDrugs
Merck & Co., Inc.MRK7PHASE3Pembrolizumab, Enzalutamide, Ifinatamab deruxtecan, Docetaxel, Prednisone
AstraZeneca PLCAZN20PHASE3olaparib, abiraterone, Saruparib, Abiraterone, Darolutamide
Pfizer Inc.PFE12PHASE3Talazoparib with enzalutamide, PF-06821497, Docetaxel, Enzalutamide, Leuprolide Open Label
Johnson & JohnsonJNJ21PHASE3Apalutamide, Androgen Deprivation Therapy, Niraparib, Abiraterone, Prednisone
Eli Lilly and CompanyLLY9PHASE3Abemaciclib, Abiraterone, Prednisone or Prednisolone, -PNT2002, Enzalutamide
Amgen Inc.AMGN7PHASE3Xaluritamig, Abiraterone, Enzalutamide, Cabazitaxel, Docetaxel
Novartis AG Sponsored ADRNVS28PHASE3177Lu-PSMA-617, 68Ga-PSMA-11, ARDT, ADT, AAA617
Exelixis, Inc.EXEL4PHASE3Cabozantinib, Atezolizumab, Abiraterone, Enzalutamide, Prednisone
Candel Therapeutics, Inc.CADL3PHASE3Aglatimagene besadenovec + valacyclovir, aglatimagene besadenovec, valacyclovir, aglatimagene besadenovec + valacyclovir
Bristol-Myers Squibb CompanyBMY2PHASE3BMS-986365, Enzalutamide, Abiraterone, Docetaxel, Predinsone/Prednisolone
BioNTech SE Sponsored ADRBNTX1PHASE3BNT324, Docetaxel, Prednisone/prednisolone
Telix Pharmaceuticals Limited Sponsored ADRTLX3PHASE368Ga-PSMA-11, 177Lu-TLX591, Enzalutamide, Abiraterone, Docetaxel
Sanofi SA Sponsored ADRSNY2PHASE3abiraterone, Docetaxel, Cabazitaxel
Regeneron Pharmaceuticals, Inc.REGN4PHASE2REGN2810, Degarelix, Leuprolide, Docetaxel, BPX-601
Veracyte, Inc.VCYT2PHASE2Darolutamide, Zoladex, Zoladex LA, Decapeptyl sustained release, Depo-Eligard
Kyntra Bio, Inc.KYNB2PHASE2FG-3246, FOR46, Enzalutamide, Pegfilgrastim
Lantheus Holdings IncLNTH3PHASE3Undisclosed
IDEAYA Biosciences, Inc.IDYA3PHASE1IDE-161, Pembrolizumab, IDE034, IDE574, Fulvestrant
Xencor, Inc.XNCR1PHASE2vudalimab
GSK plc Sponsored ADRGSK2PHASE1GSK5471713, GSK5458514
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Recent Changes (Last 90 Days)
LOWMay 29, 2026NCT06925737lastUpdatePostDate: changed
LOWMay 29, 2026NCT06925737lastUpdatePostDate: changed
LOWMay 29, 2026NCT06925737lastUpdatePostDate: changed
LOWMay 26, 2026NCT06925737primaryCompletionDate: changed
LOWMay 24, 2026NCT06925737studyFirstPostDate: changed