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 @ 9:54 PM
Ignite Modification Date:
2025-12-24 @ 9:54 PM
NCT ID:
NCT00082732
Brief Summary:
RATIONALE: A low-fat, high-fiber diet that includes soy protein may prevent disease progression in patients with hormone-refractory prostate cancer. Nutrition counseling may help motivate patients to follow this diet.
PURPOSE: Randomized phase I trial to study the effectiveness of behavior-based dietary interventions, such as receiving nutrition counseling, in helping patients who have hormone-refractory prostate cancer follow a low-fat, high-fiber, soy-supplemented diet.
Detailed Description:
OBJECTIVES:
* Determine whether a behavior-based dietary intervention can motivate patients with hormone-refractory prostate cancer to adopt and maintain a dietary pattern that includes \< 20% of energy from fat, \> 25 g of fiber, and 80 g of soy protein powder.
* Compare bioavailable levels of testosterone in patients treated with a behavior-based dietary intervention vs observation only.
* Determine whether this dietary intervention decreases or stabilizes a rising serum prostate-specific antigen level in these patients.
* Determine whether this dietary intervention improves disease-specific survival, mediated by reduced bioavailable levels of testosterone, in these patients.
* Determine the impact of a positive intervention outcome on androgen receptors in patients treated with this dietary intervention.
OUTLINE: This is a randomized, controlled, pilot, multicenter study. Patients are randomized to 1 of 2 treatment arms.
All patients receive nutritional counseling on a healthy diet. Patients also keep a food diary during study participation.
* Arm I (dietary intervention): Patients receive dietary intervention comprising nutritional counseling on a low-fat, high-fiber, soy supplemented diet and behavior-based activities, such as goal-setting, contracting, and stimulus control, once weekly for 6 weeks, every 3 weeks for 33 weeks, and then at weeks 44, 48, and 52. Treatment continues in the absence of disease progression or unacceptable toxicity.
* Arm II (observation): Patients undergo observation every 6 weeks for 36 weeks and then every 8 weeks for 18 weeks.
PROJECTED ACCRUAL: A total of 92 patients (46 per treatment arm) will be accrued for this study.
Study:
NCT00082732
Study Brief:
Protocol Section:
NCT00082732