Soy Supplements in Treating Patients Undergoing Surgery for Localized Prostate Cancer

NCT ID: NCT00345813

Last Updated: 2018-08-10

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE2

Total Enrollment

62 participants

Study Classification

INTERVENTIONAL

Study Start Date

2003-10-31

Study Completion Date

2006-07-31

Brief Summary

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RATIONALE: Dietary supplementation with soy may keep prostate cancer from growing in patients planning to undergo surgery.

PURPOSE: This randomized phase II trial is studying a soy supplement to see how well it works compared to a placebo in treating patients undergoing surgery for localized prostate cancer.

Detailed Description

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OBJECTIVES:

Primary

* Compare the effect of dietary supplementation with soy vs placebo on biomarkers of cell cycle regulation, proliferation, differentiation, apoptosis, and signaling pathways in patients with localized prostate cancer scheduled to undergo radical prostatectomy.

Secondary

* Compare the toxicity and side effects of these regimens in these patients.
* Compare the dietary patterns of these patients.

OUTLINE: This is a prospective, randomized study. Patients are randomized to 1 of 2 treatment arms.

* Arm I: Patients receive oral soy supplementation daily for 4 weeks.
* Arm II: Patients receive oral placebo supplementation daily for 4 weeks. Patients undergo radical prostatectomy within 21 days after completion of soy or placebo supplementation.

Blood and tissue samples are collected for biomarker analysis using immunohistochemistry.

Conditions

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Prostate Cancer

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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Arm I

Patients receive oral soy supplementation daily for 4 weeks. Patients undergo radical prostatectomy within 21 days after completion of soy supplementation.

Group Type EXPERIMENTAL

soy isoflavones

Intervention Type DIETARY_SUPPLEMENT

Given orally

soy protein isolate

Intervention Type DIETARY_SUPPLEMENT

Given orally

Arm II

Patients receive oral placebo supplementation daily for 4 weeks. Patients undergo radical prostatectomy within 21 days after completion of placebo supplementation.

Group Type PLACEBO_COMPARATOR

placebo

Intervention Type OTHER

Given orally

Interventions

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soy isoflavones

Given orally

Intervention Type DIETARY_SUPPLEMENT

soy protein isolate

Given orally

Intervention Type DIETARY_SUPPLEMENT

placebo

Given orally

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

DISEASE CHARACTERISTICS:

* Histologically confirmed adenocarcinoma of the prostate

* Clinically localized disease
* Scheduled for radical prostatectomy
* No evidence of metastatic disease by bone scan or CT scan of the abdomen or pelvis

PATIENT CHARACTERISTICS:

* ECOG performance status 0-2
* No evidence of active nephrolithiasis
* No history of hypercalcemic syndrome

PRIOR CONCURRENT THERAPY:

* No prior treatment for prostate cancer, including radiotherapy, systemic chemotherapy, surgery, or investigational drugs
* No other concurrent dietary supplementation with soy, cholecalciferol (vitamin D), or fish oil
Minimum Eligible Age

18 Years

Maximum Eligible Age

120 Years

Eligible Sex

MALE

Accepts Healthy Volunteers

No

Sponsors

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National Cancer Institute (NCI)

NIH

Sponsor Role collaborator

Wake Forest University Health Sciences

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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M. Craig Hall, MD

Role: STUDY_CHAIR

Wake Forest University Health Sciences

Locations

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Wake Forest University Comprehensive Cancer Center

Winston-Salem, North Carolina, United States

Site Status

Countries

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United States

Other Identifiers

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CCCWFU-98203

Identifier Type: -

Identifier Source: secondary_id

CCCWFU-BG03-332

Identifier Type: -

Identifier Source: secondary_id

CDR0000466317

Identifier Type: -

Identifier Source: org_study_id

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