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Completed Phase 2 Interventional Results available

Safety and Efficacy Study of Enzalutamide Versus Bicalutamide in Men With Prostate Cancer

ClinicalTrials.gov ID: NCT01664923

Public ClinicalTrials.gov record NCT01664923. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Sep 2, 2026, 10:47 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Official title

STRIVE: A MULTICENTER PHASE 2, RANDOMIZED, DOUBLE-BLIND, EFFICACY AND SAFETY STUDY OF ENZALUTAMIDE VS. BICALUTAMIDE IN MEN WITH PROSTATE CANCER WHO HAVE FAILED PRIMARY ANDROGEN DEPRIVATION THERAPY

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

The purpose of this study is to determine the safety and efficacy of enzalutamide vs bicalutamide in asymptomatic or mildly symptomatic patients with prostate cancer who have disease progression despite primary androgen deprivation therapy.

Study identification

NCT ID
NCT01664923
Recruitment status
Completed
Study type
Interventional
Phase
Phase 2
Lead sponsor
Pfizer
Industry
Enrollment
396 participants

Conditions and interventions

Interventions

Drug

Eligibility (public fields only)

Age range
18 Years and older
Sex
Male
Healthy volunteers
Healthy volunteers not accepted

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Jul 31, 2012
Primary completion
Jan 31, 2015
Completion
Dec 31, 2017
Last update posted
Jan 29, 2019

2012 – 2018

United States locations

U.S. sites
109
U.S. states
26
U.S. cities
79
Facility City State ZIP Site status
University of Alabama at Birmingham Birmingham Alabama 35233
University of Alabama at Birmingham,IDS Pharmacy Birmingham Alabama 35249
University of Alabama at Birmingham Birmingham Alabama 35294
Desert Springs Cancer Care Scottsdale Arizona 85255
Arizona Oncology Associates, PC - HOPE Tucson Arizona 85704
Arizona Oncology Associates, PC - HOPE Tucson Arizona 85710
Urological Associates of Southern Arizona, PC Tucson Arizona 85715
Urological Associates of Southern Arizona, PC Tucson Arizona 85741
Southern California Permanente Medical Group Anaheim California 92806
Kaiser Permanente Medical Center Lab Drawing Station Antioch California 94509
Kaiser Permanente Medical Center Lab Drawing Station Antioch California 94531
Kaiser Permanente Medical Center Lab Drawing Station Fairfield California 94533-6901
Kaiser Permanente Medical Center Lab Drawing Station Gilroy California 95020
Southern California Permanente Medical Group Los Angeles California 90027
Tower Urology Los Angeles California 90048
UCLA Clark Urology Clinic Los Angeles California 90095
UCLA Department of Pharmaceutical Services Los Angeles California 90095
Kaiser Permanente Medical Center Lab Drawing Station Martinez California 94553
Kaiser Permanente Medical Center Lab Drawing Station Milpitas California 95035-5491
Kaiser Permanente Medical Center Lab Drawing Station Modesto California 95356
Kaiser Permanente Medical Center Lab Drawing Station Moutain View California 94041
Kaiser Permanente Medical Center Lab Drawing Station Napa California 94558-3313
Kaiser Permanente Medical Center Oakland California 94611
Kaiser Permanente Medical Center Lab Drawing Station Pleasanton California 94558
Kaiser Permanente Medical Center Lab Drawing Station Redwood City California 94063
Kaiser Permanente Medical Center Roseville California 95661
UC Davis Comprehensive Cancer Center Sacramento California 95817
UC Davis Medical Center Sacramento California 95817
Kaiser Permanente Medical Center Sacramento California 95825
San Bernardino Urological Associates Medical Group San Bernardino California 92404
Southern California Permanente Medical Group San Diego California 92120
Kaiser Permanente Medical Center San Francisco California 94115
Kaiser Permanente Medical Center San Jose California 95119
Kaiser Permanente Medical Center San Leandro California 94577
Southern California Permanente Medical Group San Marcos California 92078
Kaiser Permanente Medical Center Santa Clara California 95051
Skyline Urology Sherman Oaks California 91411
Kaiser Permanente Medical Center South San Francisco California 94080
Standford Health Care Stanford California 94305
Skyline Urology Torrance California 90505
Kaiser Permanente Medical Center Vallejo California 94589
Kaiser Permanente Medical Center Walnut Creek California 94596
Anschutz Cancer Center Pavilion Pharmacy Aurora Colorado 80045
Anschutz Inpatient Pavilion Aurora Colorado 80045
University of Colorado Cancer Center, Anschutz Cancer Pavilion Aurora Colorado 80045
The Urology Center of Colorado Denver Colorado 80211
George Washington University - Medical Faculty Associates Washington D.C. District of Columbia 20037
Advanced Urology institute Daytona Beach Florida 32114
East Coast Institute for Research, LLC Jacksonville Florida 32207
East Coast Institute for Research, LLC Jacksonville Florida 32216
Specialists In Urology Naples Florida 34102
First Urology, PSC Jeffersonville Indiana 47130
Metairie Oncologist, LLC Metairie Louisiana 70006
Ochsner Clinic Foundation New Orleans Louisiana 70121
Regional Urology, LLC Shreveport Louisiana 71106
Chesapeake Urology Research Associates Towson Maryland 21204
Michigan Institute of Urology Troy Michigan 48084
Minnesota Oncology Hematology, P.A. Edina Minnesota 55435-2150
Minnesota Oncology Hematology, P.A. Woodbury Minnesota 55125
Barnes-Jewish West County Hospital Creve Coeur Missouri 63141
Barnes-Jewish Hospital St Louis Missouri 63110
Washington University Infusion Center Pharmacy St Louis Missouri 63110
Washington University, School of Medicine, 7th Floor, Center for Advanced Medicine St Louis Missouri 63110
Siteman Cancer Center - South County St Louis Missouri 63129
GU Research network,LLC / Urology Cancer Center Omaha Nebraska 68130
Hackensack University Medical Center Hackensack New Jersey 07601
John Theurer Cancer Center at Hackensack University Medical Center Hackensack New Jersey 07601
AccuMed Research Associates Garden City New York 11530
Premier Medical Group of the Hudson Valley PC Poughkeepsie New York 12601
Associated Medical Professionals of NY, PLLC Syracuse New York 13210
Carolinas Medical Center-Steelcreek Charlotte North Carolina 28278
Carolina Clinical Trials, LLC Concord North Carolina 28025
Carolina Urology Partners, PLLC Concord North Carolina 28025
Duke University Medical Center Durham North Carolina 27710
Investigational Chemotherapy Services Durham North Carolina 27710
Alliance Urology Specialists, PA Greensboro North Carolina 27403
Rowan Regional Medical Center Salisbury North Carolina 28144
Wake Forest Baptist Health Urology Winston-Salem North Carolina 27103
Wake Forest Baptist Health Winston-Salem North Carolina 27157
TriState Urologic Services PSC Inc., dba The Urology Group Cincinnati Ohio 45212
Cleveland Clinic Taussig Cancer Institute Cleveland Ohio 44195
Peace Harbor Hospital Florence Oregon 97439
Salem Hospital Salem Oregon 97301
Oregon Urology Institute Springfield Oregon 97477
Sacred Heart Nuclear Medicine Springfield Oregon 97477
Lancaster Urology Lancaster Pennsylvania 17604
Jefferson Medical Oncology Philadelphia Pennsylvania 19107
Jefferson Urology Associates Philadelphia Pennsylvania 19107
Thomas Jefferson University Hospital Philadelphia Pennsylvania 19107
UPMC Cancer Center Hillman Cancer Center Pittsburgh Pennsylvania 15232
Mount Nittany Physician Group State College Pennsylvania 16801
Mount Nittany Health State College Pennsylvania 16803
Charleston Hematology Oncology Associates, PA Charleston South Carolina 29414
Carolina Urologic Research Center Myrtle Beach South Carolina 29572
Urology Associates P.C. Nashville Tennessee 37209
Vanderbilt University Medical Center Nashville Tennessee 37232
Urology Clinics of North Texas Dallas Texas 75231
Texas Oncology - Baylor Charles A. Sammons Cancer Center Dallas Texas 75246
Texas Oncology-Memorial City Houston Texas 77024
Urology San Antonio Research San Antonio Texas 78229
University of Utah/Huntsman Cancer Hospital Salt Lake City Utah 84112
University of Utah/Huntsman Cancer Institute Salt Lake City Utah 84112
Virginia Oncology Associates Hampton Virginia 23666
Virginia Oncology Associates Norfolk Virginia 23502
Urology of Virginia, PLLC. Virginia Beach Virginia 23462
Virginia Mason Medical Center Seattle Washington 98101
Seattle Cancer Care Alliance Seattle Washington 98109
University of Washington Medical Center Seattle Washington 98195
University of Wisconsin Clinical Sciences Center Madison Wisconsin 53792

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT01664923, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted Jan 29, 2019 · Synced Sep 2, 2026

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Open the official record

The complete protocol, eligibility criteria, and contact information for NCT01664923 live on ClinicalTrials.gov.

View official ClinicalTrials.gov record →