Recent Updates
Recently added Catalysts

177Lu-J591

Phase 2

Prostate Cancer | Small molecule | Oncology |United Therapeutics Corporation|Last Updated: Apr 8, 2026

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
Premium
Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
Premium
Trial Design
RandomizedDouble-BlindPLACEBO_CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment55
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT00859781177Lu Radiolabeled Monoclonal Antibody HuJ591 (177Lu-J591) and Ketoconazole in Patients With Prostate CancerPHASE2 ACTIVE NOT_RECRUITING 55Jun 1, 2009Sep 1, 2026Apr 8, 20269 United States
Unlock Drug Trial Details
Study Endpoints
Primary Endpoints
Proportion of Participants Free of Radiographically Evident Metastases From Baseline to 18 Months After Study Drug Administration
Baseline and 18 months after study drug administration

Subjects will perform a CT and/or MRI scan of the abdomen and pelvis, chest x-ray or CT scan of the chest and bone scan to determine the proportion of participants free of radiographically evident metastases from baseline to 18 months after study drug administration.

Secondary Endpoints
Change in PSA Response Rate
Collected at screening, V2, V3, V5, V9 then every 4 weeks till PSA progression or end of study at approximately 100 months
Unlock Study Endpoints
Study Design & Arms
AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
1. 177Lu-J591 + KetoconazoleEXPERIMENTALKetoconazole 400 mg 3 times a day plus hydrocortisone 20 mg AM, 10 mg PM x 4 weeks followed by 177Lu-J591 Infusion, continue ketoconazole and hydrocortisone
2. 111In-J591 + KetoconazolePLACEBO_COMPARATORKetoconazole 400 mg 3 times a day plus hydrocortisone 20 mg AM, 10 mg PM x 4 weeks followed by 111In-J591 (placebo) Infusion, continue ketoconazole and hydrocortisone
Interventions
NameTypeDescription
177Lu-J591DRUG177Lu-J591 70 mCi/m2 on day 29 (+/- 2 days) of treatment
KetoconazoleDRUGKetoconazole at a dose of 400 mg (two 200 mg tabs) to be taken orally (preferably on an empty stomach) three times per day (total daily dose of 1200 mg)
HydrocortisoneDRUGHydrocortisone at a dose of 20 mg orally each morning, 10 mg orally each evening (total daily dose of 30 mg)
111In-J591DRUG111In-J591 at a dose of 5 mCi on day 29 (+/- 2 days) of treatment
Unlock Study Design Details
Eligibility Criteria
Age Range18 Years — N/A
SexMALE
Healthy VolunteersNo
Study Sites9

Inclusion Criteria: * Histologically or cytologically confirmed adenocarcinoma of the prostate previously treated with surgery and/or radiotherapy. * Biochemical progression (rising PSA) after medical or surgical castration * High risk of systemic progression defined as: 1. Rising PSA as defined...

Countries:United States
Unlock Eligibility Criteria
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
Unlock Competitive Intelligence