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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

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Market & Valuation

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Trial Design

UNCONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment13

FDA Designations

No designations recorded

Clinical trial landscape

EPI-7386 · 1 trial · 3 indications

Phase 2 1
NCT06312670Combining EPI-7386 With Enzalutamide and Androgen Deprivation Therapy for Metastatic Hormone-Sensitive Prostate CancerMetastatic Hormone-sensitive Prostate Cancer (mHSPC)
COMPLETED13 Analytics
PHASE2COMPLETED
Combining EPI-7386 With Enzalutamide and Androgen Deprivation Therapy for Metastatic Hormone-Sensitive Prostate Cancer
Metastatic Hormone-sensitive Prostate Cancer (mHSPC)Unlock trial analytics

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 to 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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Frequently asked questions about EPI-7386

What is EPI-7386 used for?

EPI-7386 is an investigational small molecule being studied for the treatment of metastatic hormone-sensitive prostate cancer (mHSPC). It is intended for use in combination with enzalutamide and androgen deprivation therapy. The drug is currently in Phase 2 clinical development and is not yet approved by regulatory authorities.

What does EPI-7386 target?

EPI-7386 is a small molecule that targets the androgen receptor pathway. It is being evaluated in combination with enzalutamide and androgen deprivation therapy for metastatic hormone-sensitive prostate cancer. The drug is designed to interfere with androgen receptor signaling, which plays a key role in prostate cancer growth.

Who makes EPI-7386?

EPI-7386 is being developed by ESSA Pharma Inc., a biopharmaceutical company. ESSA Pharma is publicly traded on the NASDAQ under the ticker symbol EPIX. The company is conducting clinical trials to evaluate the safety and efficacy of EPI-7386 in patients with metastatic hormone-sensitive prostate cancer.

What phase is EPI-7386 in?

EPI-7386 is in Phase 2 clinical development. It is an investigational drug and has not been approved by the FDA or any other regulatory agency. The drug is being studied for the treatment of metastatic hormone-sensitive prostate cancer, and its safety and efficacy have not yet been established.

What clinical trials is EPI-7386 in?

EPI-7386 has been studied in a Phase 2 clinical trial with the identifier NCT06312670. This trial evaluated the combination of EPI-7386 with enzalutamide and androgen deprivation therapy in patients with metastatic hormone-sensitive prostate cancer. The study was completed and enrolled 13 participants in the United States.