Radiation Therapy in Treating Patients With Stage II Prostate Cancer

This study is ongoing, but not recruiting participants.
Information provided by:
National Cancer Institute (NCI)
ClinicalTrials.gov Identifier:
First received: April 9, 2002
Last updated: August 3, 2012
Last verified: October 2008

RATIONALE: Specialized radiation therapy that delivers a high dose of radiation directly to the tumor may kill more tumor cells and cause less damage to normal tissue. It is not yet known which dose of radiation therapy is more effective in treating stage II prostate cancer.

PURPOSE: Randomized phase III trial to compare the effectiveness of two different doses of specialized radiation therapy in treating patients who have stage II prostate cancer.

Condition Intervention Phase
Prostate Cancer
Radiation: radiation therapy
Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Primary Purpose: Treatment
Official Title: A Phase III Randomized Study Of High Dose 3D-CRT/IMRT Versus Standard Dose 3D-CRT/IMRT In Patients Treated For Localized Prostate Cancer

Resource links provided by NLM:

Further study details as provided by National Cancer Institute (NCI):

Primary Outcome Measures:
  • Overall survival [ Designated as safety issue: No ]

Secondary Outcome Measures:
  • Prostate-specific antigen failure by American Society for Therapeutic Radiology and Oncology (ASTRO) definition [ Designated as safety issue: No ]
  • Disease specific survival as assessed by failure (a competing risk cause of death not necessarily due to disease specific cause) [ Designated as safety issue: No ]
  • Local progression as measured by clinical criteria and histologic criteria by biopsy [ Designated as safety issue: No ]
  • Distant metastases by clinical or bone scan [ Designated as safety issue: No ]
  • Genitourinary and/or gastrointestinal toxicity ≥ grade 2 by RTOG toxicity criteria [ Designated as safety issue: Yes ]
  • Erectile Function by International Index of Erectile Function (IIEF) [ Designated as safety issue: No ]
  • Global Quality of Life (QOL) by Spitzer QOL Index (SQLI) [ Designated as safety issue: No ]
  • Quality adjusted survival by SQLI [ Designated as safety issue: No ]

Estimated Enrollment: 1520
Study Start Date: March 2002
Estimated Primary Completion Date: March 2015 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: Arm I
Patients undergo standard-dose three-dimensional conformal radiotherapy (3D-CRT) or intensity-modulated radiotherapy (IMRT) once daily, 5 days a week, for 7.8 weeks (39 treatment days).
Radiation: radiation therapy
Given 5 days a week for 7.8 or 8.8 weeks
Experimental: Arm II
Patients undergo high-dose 3D-CRT or IMRT once daily, 5 days a week, for 8.8 weeks (44 treatment days).
Radiation: radiation therapy
Given 5 days a week for 7.8 or 8.8 weeks

Detailed Description:


  • Compare the overall survival of patients with stage II adenocarcinoma of the prostate treated with high- vs standard-dose three-dimensional conformal or intensity-modulated radiotherapy.
  • Compare the freedom from prostate-specific antigen failure, disease-specific survival, local progression, and distant metastases in patients treated with these regimens.
  • Compare the probability of tumor control and normal tissue complications in patients treated with these regimens.
  • Compare the incidence of grade 2 or greater genitourinary and gastrointestinal acute and late toxicity in patients treated with these regimens.
  • Compare the quality of life, including sexual function, of patients treated with these regimens.
  • Correlate histopathologic or tumor-specific cytogenetic or chromosomal markers with cancer control outcomes in patients treated with these regimens.

OUTLINE: This is a randomized, multicenter study. Patients are stratified according to Gleason score and prostate-specific antigen (PSA) level (Gleason score 2-6, PSA ≥10 mg/mL but < 20 ng/mL vs Gleason score 7, PSA < 15 ng/mL) and radiation modality (three-dimensional conformal radiotherapy [3D-CRT] vs intensity-modulated radiotherapy [IMRT]). Patients are randomized to 1 of 2 treatment arms.

  • Arm I: Patients undergo standard-dose 3D-CRT or IMRT once daily, 5 days a week, for 7.8 weeks (39 treatment days).
  • Arm II: Patients undergo high-dose 3D-CRT or IMRT once daily, 5 days a week, for 8.8 weeks (44 treatment days).

Quality of life (QOL) is assessed initially at baseline. After completion of radiotherapy, QOL is assessed every 3 months for 1 year and then every 6 months for 4 years.

Patients are followed every 3 months for 2 years, every 6 months for 3 years, and then annually thereafter.

PROJECTED ACCRUAL: A total of 1,520 patients (760 per treatment arm) will be accrued for this study within 5 years.


Genders Eligible for Study:   Male
Accepts Healthy Volunteers:   No


  • Histologically confirmed adenocarcinoma of the prostate

    • Clinical stage T1b-T2b
  • Meets one of the following criteria:

    • Gleason score 2-6 AND prostate-specific antigen (PSA) ≥ 10 ng/mL but < 20 ng/mL
    • Gleason score 7 AND PSA < 15 ng/mL
  • No regional lymph node involvement
  • No distant metastases



  • Any age

Performance status:

  • Zubrod 0-1

Life expectancy:

  • Not specified


  • Not specified


  • Not specified


  • Not specified


  • No other invasive malignancy within the past 5 years except localized basal cell or squamous cell skin cancer
  • No other major medical or psychiatric illness that would preclude study participation
  • Fertile patients must use effective contraception


Biologic therapy:

  • Not specified


  • No prior cytotoxic chemotherapy
  • No concurrent cytotoxic chemotherapy

Endocrine therapy:

  • At least 3 months since prior finasteride
  • No other prior hormonal therapy, including:

    • Luteinizing hormone-releasing hormone agonists (e.g., goserelin or leuprolide)
    • Antiandrogens (e.g., flutamide or bicalutamide)
    • Estrogens (e.g., diethylstilbestrol)
  • No concurrent (neoadjuvant or adjuvant) hormonal therapy


  • No prior pelvic irradiation or prostatic brachytherapy


  • No prior radical surgery (prostatectomy) or cryosurgery for prostate cancer
  • No prior surgical castration (bilateral orchiectomy)


  • At least 3 months since prior finasteride or PC SPES
  Contacts and Locations
Please refer to this study by its ClinicalTrials.gov identifier: NCT00033631

  Show 86 Study Locations
Sponsors and Collaborators
Radiation Therapy Oncology Group
Study Chair: Jeff M. Michalski, MD Washington University Siteman Cancer Center
  More Information

Additional Information:
ClinicalTrials.gov Identifier: NCT00033631     History of Changes
Other Study ID Numbers: CDR0000069306, RTOG-0126
Study First Received: April 9, 2002
Last Updated: August 3, 2012
Health Authority: United States: Federal Government

Keywords provided by National Cancer Institute (NCI):
adenocarcinoma of the prostate
stage IIB prostate cancer
stage IIA prostate cancer

Additional relevant MeSH terms:
Prostatic Neoplasms
Genital Neoplasms, Male
Urogenital Neoplasms
Neoplasms by Site
Genital Diseases, Male
Prostatic Diseases

ClinicalTrials.gov processed this record on April 14, 2014