Skip to content
Study details
Enrolling now

A Trial to Find Out if REGN4336 is Safe and How Well it Works for Prostate Cancer

Regeneron Pharmaceuticals
NCT IDNCT05125016ClinicalTrials.gov data as of Apr 2026
Phase

Phase 1/2

Target enrollment

370

Study length

about 5.1 years

Ages

18+

Sex

Male only

Locations

13 sites in CA, CT, KY +8

What this study is about

This trial is testing a new drug called REGN4336, possibly with other drugs like cemiplimab or REGN5678. The goal is to see if REGN4336 is safe, how well it works, and what side effects might occur in people with advanced prostate cancer.

Simplified from trial records by PatientMatch.

What you may be asked to do

  • 1.Take Cemiplimab
  • 2.Take REGN4336
  • 3.Take REGN5678
  • +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
Standard

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

cemiplimab, sarilumab

Endpoints

Primary: Incidence and severity of Immune-mediated Adverse Events (imAEs), Incidence and severity of Serious Adverse Events (SAEs), Incidence and severity of adverse event of special interest (AESIs), Incidence and severity of treatment-emergent adverse events (TEAEs), Incidence of dose-limiting toxicities (DLTs), Objective response rate (ORR) per modified per modified Prostate Cancer Working Group 3 (PCWG3) criteria

Secondary: Incidence and severity of SAEs, Incidence and severity of TEAEs, ORR per modified per modified PCWG3 criteria

Body systems

Oncology