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JANX007

Phase 1

Prostate Cancer | Monoclonal antibody | Oncology |Janux Therapeutics, Inc.|Last Updated: Jan 20, 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
CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment272
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT05519449Study of JANX007 in Subjects With Metastatic Castration-Resistant Prostate Cancer (ENGAGER-PSMA-01)PHASE1 RECRUITING 272Sep 15, 2022Dec 1, 2028Jan 20, 202635 United States, Australia
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Study Endpoints
Primary Endpoints
Incidence of Dose Limiting Toxicities (DLT)
3 years
Incidence of Adverse Events (AE) and Serious Adverse Events (SAE)
3 years
Secondary Endpoints
Area under the concentration time curve to infinity of JANX007 (AUC0-inf)
Pre-dose and at multiple timepoints post-dose on Days 1, 2, 4, 8, 9, 15, 16, 18 up to end of treatment (Up to 3 years)
Maximum observed concentration of JANX007 (Cmax)
Pre-dose and at multiple timepoints post-dose on Days 1, 2, 4, 8, 9, 15, 16, 18 up to end of treatment (Up to 3 years)
Number of participants who develop anti-drug antibodies against JANX007
Up to 3 years
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Study Design & Arms
AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Dose EscalationEXPERIMENTALIV dosing during 21- or 28-day cycles. Dosage per cohort will increase to determine the maximum tolerable dose.
Backfill ExpansionEXPERIMENTALIV dosing during 21- or 28-day cycles. Subjects will be dosed at levels previously declared tolerable.
Monotherapy Expansion Parts A - DEXPERIMENTALIV dosing during 21- or 28-day cycles. Subjects will be dosed at preliminary recommended phase 2 dose (RP2D).
Combination ExpansionEXPERIMENTALIV dosing during 21- or 28-day cycles. Subjects will be dosed at preliminary recommended phase 2 dose
Interventions
NameTypeDescription
JANX007BIOLOGICALJANX007 is dosed via IV in a 21- or 28-day cycle.
DarolutamideDRUGDarolutamide is dosed via oral tablets
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Eligibility Criteria
Age Range18 Years — 100 Years
SexMALE
Healthy VolunteersNo
Study Sites35

Inclusion Criteria: * Male ≥18 years of age at the time of signing informed consent * Histologically or cytologically confirmed adenocarcinoma of the prostate * For Dose Escalation and Backfill: Having mCRPC that progressed after at least one novel anti-androgen therapy and at least one taxane cont...

Countries:United StatesAustralia
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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 26, 2026NCT05519449primaryCompletionDate: changed
LOWMay 24, 2026NCT05519449studyFirstPostDate: changed