Description Module
The Description Module contains narrative descriptions of the clinical trial, including a brief summary and detailed description. These descriptions provide important information about the study's purpose, methodology, and key details in language accessible to both researchers and the general public.
Description Module path is as follows:
Study -> Protocol Section -> Description Module
Description Module
Ignite Creation Date:
2025-12-24 @ 4:09 PM
Ignite Modification Date:
2025-12-24 @ 4:09 PM
NCT ID:
NCT00118066
Brief Summary:
RATIONALE: Chemoprevention is the use of certain drugs to keep cancer from forming, growing, or coming back. The use of calcitriol may prevent prostate cancer. It is not yet known whether calcitriol is more effective than observation in preventing prostate cancer.
PURPOSE: This randomized phase II trial is studying how well calcitriol works in preventing prostate cancer in patients with prostatic intraepithelial neoplasia.
Detailed Description:
OBJECTIVES:
* Determine the effects of calcitriol in patients with high-grade prostatic intraepithelial neoplasia.
* Determine the toxicity of this drug in these patients.
* Determine the effect of this drug on prostate specific antigen in these patients.
OUTLINE: This is a randomized, multicenter study. Patients are randomized to 1 of 2 arms.
* Arm I: Patients receive oral calcitriol once daily for 8 weeks. Treatment repeats every 8 weeks for 2 courses in the absence of unacceptable toxicity.
After completion of course 2 (week 16), patients undergo biopsy. Patients continue to receive calcitriol for up to 3 additional weeks while the biopsy is being evaluated. Patients with persistent high-grade prostatic intraepithelial neoplasia (HGPIN) by biopsy receive 2 additional courses of calcitriol. Patients with no HGPIN or prostate cancer by biopsy are removed from the study.
* Arm II: Patients undergo observation for 16 weeks. At week 16, patients undergo biopsy. Patients with persistent HGPIN by biopsy receive 2 courses of calcitriol as in arm I. Patients with no HGPIN or prostate cancer by biopsy are removed from the study.
After completion of study treatment, patients are followed annually for 2 years.
PROJECTED ACCRUAL: A total of 50 patients (25 per arm) will be accrued for this study.
Study:
NCT00118066
Study Brief:
Protocol Section:
NCT00118066