Summary

Eligibility
for males ages 18 years and up (full criteria)
Location
at La Jolla, California and other locations
Dates
study started
estimated completion

Description

Summary

This Phase III, multicenter, randomized, open-label study will evaluate the safety and efficacy of atezolizumab (anti-programmed death-ligand 1 [anti-PD-L1] antibody) in combination with enzalutamide compared with enzalutamide alone in participants with mCRPC after failure of an androgen synthesis inhibitor (e.g., abiraterone) and failure of, ineligibility for, or refusal of a taxane regimen. Participants will be randomized to one of the two treatment arms (atezolizumab in combination with enzalutamide, and enzalutamide alone) in a 1:1 ratio (experimental to control arm) in global randomized phase. Participants will receive treatment until investigator-assessed confirmed radiographic disease progression per Prostate Cancer Working Group 3 (PCWG3) criteria or unacceptable toxicity.

Official Title

A Phase III, Multicenter, Randomized Study of Atezolizumab (Anti-PD-L1 Antibody) in Combination With Enzalutamide Versus Enzalutamide Alone in Patients With Metastatic Castration-Resistant Prostate Cancer After Failure of an Androgen Synthesis Inhibitor and Failure of, Ineligibility for, or Refusal of a Taxane Regimen

Keywords

Prostatic Neoplasms, Castration-Resistant Prostatic Neoplasms Atezolizumab Enzalutamide Atezolizumab + Enzalutamide

Eligibility

You can join if…

Open to males ages 18 years and up

  • Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1
  • Life expectancy greater than or equal to (>/=) 3 months
  • Histologically confirmed adenocarcinoma of the prostate
  • Known castrate-resistant disease with serum testosterone level less than or equal to (</=) 50 nanograms per deciliter (ng/dL) with prior surgical castration or ongoing androgen deprivation for the duration of the study
  • Progressive disease prior to screening by PSA or imaging per PCWG3 criteria during or following the direct prior line of therapy in the setting of medical or surgical castration
  • One prior regimen/line of a taxane-containing regimen for mCRPC or refusal or ineligibility of a taxane-containing regimen
  • Progression on a prior regimen/line of an androgen synthesis inhibitor for prostate cancer
  • Availability of a representative tumor specimen from a site not previously irradiated that is suitable for determination of programmed death-ligand 1 (PD-L1) status via central testing
  • Adequate hematologic and end organ function

You CAN'T join if...

  • Prior treatment with enzalutamide or any other newer hormonal androgen receptor inhibitor (e.g., apalutamide, ODM-201)
  • Treatment with any approved anti-cancer therapy, including chemotherapy, immunotherapy, radiopharmaceutical or hormonal therapy (with the exception of abiraterone), within 4 weeks prior to initiation of study treatment
  • Treatment with abiraterone within 2 weeks prior to study treatment
  • Structurally unstable bone lesions suggesting impending fracture
  • Known or suspected brain metastasis or active leptomeningeal disease
  • Major surgical procedure other than for diagnosis within 4 weeks prior to initiation of study treatment or anticipation of need for a major surgical procedure during the course of the study
  • Active or history of autoimmune disease or immune deficiency
  • Prior allogeneic stem cell or solid organ transplantation
  • History of idiopathic pulmonary fibrosis, organizing pneumonia (e.g., bronchiolitis obliterans), drug-induced pneumonitis, or idiopathic pneumonitis, or evidence of active pneumonitis on screening chest computed tomography (CT) scan
  • Positive human immunodeficiency virus (HIV) test, active tuberculosis, active hepatitis B virus (HBV) or hepatitis C virus (HCV) infection
  • Prior treatment with cluster of differentiation (CD)137 agonists or immune checkpoint blockade therapies, including anti Cytotoxic T Lymphocyte-Associated 4 (CTLA4), anti-programmed death 1 (PD-1), and anti-PD-L1 therapeutic antibodies
  • Treatment with systemic immunostimulatory agents within 4 weeks or five half-lives of the drug, whichever is shorter, prior to initiation of study treatment
  • Treatment with systemic immunosuppressive medication within 2 weeks prior to initiation of study
  • History of seizure or any condition that may predispose to seizure within 12 months prior to study treatment, including history of unexplained loss of consciousness or transient ischemic attack

Locations

  • University of California San Diego
    La Jolla California 92093 United States
  • UC Irvine Medical Center
    Orange California 92868 United States

Details

Status
in progress, not accepting new patients
Start Date
Completion Date
(estimated)
Sponsor
Hoffmann-La Roche
ID
NCT03016312
Phase
Phase 3
Study Type
Interventional
Last Updated