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Study details
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COSMYC Trial

Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins
NCT IDNCT06922318ClinicalTrials.gov data as of Apr 2026
Phase

Phase 2

Target enrollment

50

Study length

about 6 years

Ages

18+

Sex

Male only

Locations

1 site in MD

What this study is about

Researchers are testing if a combination of testosterone, ZEN-3694, enzalutamide and ZEN-3694 will reduce tumor size in men with prostate cancer that has become resistant to other treatments. The trial also aims to see if starting with testosterone and ZEN-3694 first might make enzalutamide and ZEN-3694 work better.

Simplified from trial records by PatientMatch.

What you may be asked to do

  • 1.Take Enzalutamide
  • 2.Take Luteinizing hormone-releasing hormone (LHRH) analogue
  • 3.Take Testosterone cypionate
  • +1 more

Participation Burden

What's physically and logistically required of participants.

Logistics & Travel
In-person visits

Requires travel to a study site

Physical Intervention
OralInjection / IV

How treatment is administered

Treatment Assignment
All receive treatment

Everyone gets the investigational treatment.

Extracted study details

Pulled from the trial record to show what is being tested and what the study is measuring.

Drug classes

enzalutamide, gonadorelin, Hormonal Agents, Stimulant/Replacement/Modifying (Sex Hormones/Modifiers) (Androgen Receptor Agonists)

Drug routes

oral (Oral Tablet), injection, intramuscular

Endpoints

Primary: Clinical/radiographic progression free survival (PFS) with BATZEN, Prostate specific antigen (PSA)-Progression free survival (PFS) with ZENZA

Secondary: Number of participants with Objective response to BATZEN and ZENZA, respectively per RECIST 1.1 criteria, Number of participants with treatment-related adverse events, Overall Survival, Progression Free Survival (PFS2) (PSA progression on ZENZA), Quality of Life as assessed by the Functional Assessment of Chronic Illness Therapy (FACIT) - Fatigue Scale, Quality of Life as assessed by the Short Form-36 (SF-36)

Body systems

Oncology