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Clinical trialNCT00331773CompletedPhase 3Interventional

Radiation Therapy in Treating Patients With Stage II Prostate Cancer

SponsorRadiation Therapy Oncology GroupEnrollment1,116Prostate Cancer
View the registry record on ClinicalTrials.gov

Summary

The lay summary the sponsor registered on ClinicalTrials.gov.

RATIONALE: Giving radiation therapy that uses a 3-dimensional (3-D) image of the tumor to help focus thin beams of radiation directly on the tumor, and giving hypofractionated radiation therapy (higher doses over a shorter period of time), may be less costly with fewer side effects and just as effective in treating prostate cancer. PURPOSE: This randomized phase III trial is studying several different radiation therapy regimens to compare how well they work in treating patients with stage II prostate cancer.
clinicaltrials.gov ↗

Investigators

The overall officials registered on this study. Names that resolve to a findmyKOL profile link to it; the rest are shown as registered.

A profile link is shown only when the registered name resolves to a person record with a confident, namesake-checked match; ambiguous names stay unlinked.

Sites

296 registered facilities, with the per-site recruitment status where the registry publishes one. ClinicalTrials.gov does not publish per-site enrollment counts.

Canada
  • British Columbia Cancer Agency - Centre for the Southern Interior

    Kelowna, British Columbia, Canada

  • Bcca - Fraser Valley Cancer Centre

    Surrey, British Columbia, Canada

  • British Columbia Cancer Agency - Vancouver Cancer Centre

    Vancouver, British Columbia, Canada

  • British Columbia Cancer Agency - Vancouver Island Centre

    Victoria, British Columbia, Canada

  • Saint John Regional Hospital

    Saint John, New Brunswick, Canada

  • Nova Scotia Cancer Centre

    Halifax, Nova Scotia, Canada

  • Margaret and Charles Juravinski Cancer Centre

    Hamilton, Ontario, Canada

  • London Regional Cancer Program at London Health Sciences Centre

    London, Ontario, Canada

  • Cancer Care Program at Thunder Bay Regional Health Sciences

    Thunder Bay, Ontario, Canada

  • Hopital Notre-Dame Du Chum

    Montreal, Quebec, Canada

  • Mcgill Cancer Centre at Mcgill University

    Montreal, Quebec, Canada

  • Centre Hospitalier Universitaire de Quebec

    Québec, Quebec, Canada

  • Allan Blair Cancer Centre at Pasqua Hospital

    Regina, Saskatchewan, Canada

  • Saskatoon Cancer Centre at the University of Saskatchewan

    Saskatoon, Saskatchewan, Canada

United States
  • Arizona Oncology Services Foundation

    Phoenix, Arizona, United States

  • Arizona Oncology - Tucson

    Tucson, Arizona, United States

  • Auburn Radiation Oncology

    Auburn, California, United States

  • Alta Bates Summit Comprehensive Cancer Center

    Berkeley, California, United States

  • Providence Saint Joseph Medical Center - Burbank

    Burbank, California, United States

  • Peninsula Medical Center

    Burlingame, California, United States

  • Radiation Oncology Centers - Cameron Park

    Cameron Park, California, United States

  • Mercy Cancer Center at Mercy San Juan Medical Center

    Carmichael, California, United States

  • East Bay Radiation Oncology Center

    Castro Valley, California, United States

  • Valley Medical Oncology Consultants - Castro Valley

    Castro Valley, California, United States

  • Valley Medical Oncology

    Fremont, California, United States

  • Marin Cancer Institute at Marin General Hospital

    Greenbrae, California, United States

  • Sutter Health - Western Division Cancer Research Group

    Greenbrae, California, United States

  • Kaiser Permanente Medical Center - Hayward

    Hayward, California, United States

  • Veterans Affairs Medical Center - Long Beach

    Long Beach, California, United States

  • Kaiser Permanente Medical Center - Los Angeles

    Los Angeles, California, United States

  • Alta Bates Summit Medical Center - Summit Campus

    Oakland, California, United States

  • Bay Area Breast Surgeons, Incorporated

    Oakland, California, United States

  • Ccop - Bay Area Tumor Institute

    Oakland, California, United States

  • Kaiser Permanente - Division of Research - Oakland

    Oakland, California, United States

  • Kaiser Permanente Medical Center - Oakland

    Oakland, California, United States

  • Larry G Strieff Md Medical Corporation

    Oakland, California, United States

  • Tom K Lee, Incorporated

    Oakland, California, United States

  • Valley Medical Oncology Consultants - Pleasanton

    Pleasanton, California, United States

  • Kaiser Permanente Medical Center - Rancho Cordova

    Rancho Cordova, California, United States

  • Kaiser Permanente Medical Center - Redwood City

    Redwood City, California, United States

256 more sites on the registry record.ClinicalTrials.gov ↗

Site investigator names are published by ClinicalTrials.gov only while a study recruits, so completed studies list sites without them.

Drugs studied

No drug or biological interventions are in our data for this study — it may test a procedure, device or behavioral intervention, or the intervention list isn't in our current snapshot. See the registry record ↗. Why? →

Registration & key dates

Registry attributes as recorded on the ClinicalTrials.gov study record.

Start
30 Apr 2006
Primary completion
31 Jul 2015
Completion
22 Dec 2022
Last update posted
18 Jan 2023
Registered enrollment
1,116
Registry id
NCT00331773
clinicaltrials.gov ↗

Source: ClinicalTrials.gov, via the CTTI AACT database, data as of 24 Aug 2026. Registry facts are shown as registered by the study sponsor; findmyKOL does not interpret them.