Enzalutamide versus bicalutamide in patients with nonmetastatic castration-resistant prostate cancer: a prespecified subgroup analysis of the STRIVE trial.

Journal Article (Journal Article)

BACKGROUND: In the phase 2, randomized, double-blind STRIVE trial, enzalutamide significantly reduced the risk of prostate cancer progression or death versus bicalutamide in patients with metastatic castration-resistant prostate cancer (mCRPC) and nonmetastatic CRPC (nmCRPC). The objective of this protocol-specified subgroup analysis of STRIVE was to investigate the benefit of enzalutamide versus bicalutamide specifically in patients with nmCRPC. METHODS: Patients (N = 139) were stratified by disease stage and randomized to enzalutamide 160 mg/day plus androgen deprivation therapy (ADT; n = 70) or bicalutamide 50 mg/day plus ADT (n = 69). RESULTS: Baseline characteristics of patients with nmCRPC were comparable between groups. At a median of 17 months follow-up, enzalutamide reduced the risk of progression or death by 76% versus bicalutamide in patients with nmCRPC (hazard ratio [HR], 0.24; 95% CI 0.14-0.42). Enzalutamide reduced risk of prostate-specific antigen progression by 82% versus bicalutamide in patients with nmCRPC (HR, 0.18; 95% CI 0.10-0.34). The most frequently reported adverse events by patients receiving enzalutamide were fatigue (36.2%), hot flush (20.3%), decreased appetite (17.4%), dizziness (17.4%), and nausea (17.4%). CONCLUSIONS: This STRIVE subgroup analysis of patients with nmCRPC illustrates the benefit of enzalutamide in reducing the risk of progression or death versus bicalutamide in patients with nmCRPC. TRIAL REGISTRATION: ClinicalTrials.gov identifier NCT01664923.

Full Text

Duke Authors

Cited Authors

  • Penson, DF; Armstrong, AJ; Concepcion, RS; Agarwal, N; Olsson, CA; Karsh, LI; Dunshee, CJ; Duggan, W; Shen, Q; Sugg, J; Haas, GP; Higano, CS

Published Date

  • February 2022

Published In

Volume / Issue

  • 25 / 2

Start / End Page

  • 363 - 365

PubMed ID

  • 34621011

Pubmed Central ID

  • PMC9184266

Electronic International Standard Serial Number (EISSN)

  • 1476-5608

Digital Object Identifier (DOI)

  • 10.1038/s41391-021-00465-7


  • eng

Conference Location

  • England