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EPI-7386

Phase 2

Metastatic Hormone-sensitive Prostate Cancer (mHSPC) | Small molecule | Oncology |ESSA Pharma Inc.|Last Updated: May 29, 2025

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
UNCONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment13
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT06312670Combining EPI-7386 With Enzalutamide and Androgen Deprivation Therapy for Metastatic Hormone-Sensitive Prostate CancerPHASE2 COMPLETED 13May 16, 2024Jan 9, 2025May 29, 20252 United States
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Study Endpoints
Primary Endpoints
Biochemical response rate
Post-intervention at Week 4

Defined as prostate-specific antigen (PSA) undetectable (\<0.2 ng/mL) at 6 months after treatment. The true BRR for the study population will be estimated based on the number of biochemical responses using a binomial distribution, and its confidence interval (CI) will be estimated using Wilson's method.

PSA progesterone-free survival (PFS)
Post-intervention at Week 4

Progression free survival (PFS) is measured from the date of the start of the treatment to the date of progression or death and is censored at the date of last followed for those that have not progressed

Radiographic PFS (rPFS)
Post-intervention at Week 4

Progression free survival (PFS) is measured from the date of the start of the treatment to the date of progression or death and is censored at the date of last followed for those that have not progressed

ORR (confirmed)
Post-intervention at Week 4

Objective response rate (ORR)

Secondary Endpoints
AUC0-24
Beginning of treatment day 1, at week 2, week 4, week 6
Maximum concentration (Cmax)
Beginning of treatment day 1, at week 2, week 4, week 6
Predose Plasma Concentration
Beginning of treatment day 1, at week 2, week 4, week 6
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Study Design & Arms
AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
EPI-7386 + EnzalutamideEXPERIMENTALEPI-7386 at 600 mg twice daily orally with standard of care Enzalutamide at 160 mg, once daily, orally for 36 months of treatment (11 cycles).
Interventions
NameTypeDescription
EPI-7386DRUG600 mg orally administered twice daily
EnzalutamideDRUG160 mg administered orally once daily, with or without food
Androgen Deprivation Therapy (ADT)DRUGLHRH agonist/antagonist or orchiectomy
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Eligibility Criteria
Age Range19 Years — N/A
SexMALE
Healthy VolunteersNo
Study Sites2

Inclusion Criteria: * Subjects must have histologically or cytologically confirmed prostate adenocarcinoma without small cell or neuroendocrine features (please note: \>10% small cell or neuroendocrine differentiation will be excluded). * Subjects must have received no prior second-generation antia...

Countries:United States
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