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Study of Radioimmunoguided Intensity Modulated Radiotherapy (IMRT) for Prostate Cancer

This study has been completed.
Information provided by:
Mayo Clinic Identifier:
First received: August 7, 2009
Last updated: February 23, 2011
Last verified: February 2011
The current study involves a novel and aggressive therapeutic approach for patients' prostate cancer. In addition, the investigators propose to administer hormonal therapy to patients with an especially high risk: those with initial Gleason scores of > 6, PSA > 10 ng/ml, T3/T4 primary tumors, and those found to be node positive (N+). The use of hormonal therapy in these specific settings correlates with our current standard of care. IMRT is better able to spare and protect normal tissues from receiving radiation than 3-D conformal RT. The radiotherapy would be followed by continued hormonal therapy for a total of 6 months in those who have one of the following Gleason 7 and PSA 10-20 and as per the previous version of this trial, 1 year similar to that delivered by the EORTC for higher risk patients, (those with initial Gleason scores of > 8, PSA > 20 ng/ml, or T3/T4 tumors). Those found to be N(+) would have the hormonal therapy continued indefinitely or until disease progression occurred in a manner analogous to the Messing et. al. series in prostatectomy patients. The goals are to develop and administer a program of treatment that includes the most recent developments in imaging, integrating data from both the CT scan and the ProstaScint scan to optimize prostate cancer RT. The CT scan will be used for staging and to determine the exact location of the entire prostate which will receive a reasonable dose of RT. The ProstaScint will be used to assess the spread of disease to lymph nodes as well as to determine the exact location of the tumor within the prostate gland. This region will then be boosted to a tumorcidal dose. The investigators then plan to monitor the toxicity and outcome of this treatment. The investigators expect that this program of radioimmunoguided IMRT will likely result in similar or less toxicity and increased cure rates when compared to conventional radiotherapy and standard IMRT programs.

Condition Intervention Phase
Prostatic Neoplasm Radiation: radioimmuniguided intenstiy modulated radiotherapy Phase 1 Phase 2

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Phase I/II Study of Radioimmunoguided Intensity Modulated Radiotherapy (IMRT) for Prostate Cancer

Resource links provided by NLM:

Further study details as provided by Mayo Clinic:

Primary Outcome Measures:
  • The primary outcome will be assessment of toxicity as well as efficacy as determined by survival rates, freedom from biochemical relapse rates, local control rates, distant failure rates.
  • The main endpoint of the toxicity component is evaluating how many patients develop grade 3 or greater toxicity.
  • It is expected between 0 and 9% of patients will have grade 3 or 4 toxicity.

Enrollment: 72
Study Start Date: October 2006
Study Completion Date: December 2007
Primary Completion Date: December 2007 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Radioimmunoguided IMRT
All patients recieved Intensity Modulated Radiotherapy to the prostate with 75.6 Gy in 42 fractions. Additionally, they recieve a concurrent boost to the region of the prostate which enhanced on the prostascint scan to 82 Gy.
Radiation: radioimmuniguided intenstiy modulated radiotherapy
All patients recieved 75.6 Gy in 42 fractions to the prostate and the region of the prostate which enhanced on prostascint scan was simaltaneously boosted to a total dose of 82 Gy


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   Male
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Patients with pathologically proven prostate cancer
  • No evidence of distant metastases (M0) on physical examination, bone scan
  • ECOG PS 0,1,2
  • Adequate organ function as evidenced by:

    • Hemoglobin > 10.0 gm/dl
    • White blood count > 3000/mcL
    • Platelet count > 90,000/mcL
    • AST < 2x normal
  • Age > 18 years
  • Patients can not be allergic to Leuprolide or Goserelin if the pretreatment PSA > 20, Gleason Score > 8, T3/4, or N1 disease
  • Written informed consent
  • We anticipate enrolling at least 50 patients per year, which would bring accrual to projected total of 100 patients in 2 years

Exclusion Criteria:

  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00956228

United States, Arizona
Mayo Clinic
Scottsdale, Arizona, United States
Sponsors and Collaborators
Mayo Clinic
  More Information Identifier: NCT00956228     History of Changes
Other Study ID Numbers: 390-02
Study First Received: August 7, 2009
Last Updated: February 23, 2011

Additional relevant MeSH terms:
Prostatic Neoplasms
Genital Neoplasms, Male
Urogenital Neoplasms
Neoplasms by Site
Genital Diseases, Male
Prostatic Diseases processed this record on September 18, 2017