Isoflavones and Radiation Therapy in Treating Patients With Localized Prostate Cancer

NCT ID: NCT00243048

Last Updated: 2013-04-05

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

70 participants

Study Classification

INTERVENTIONAL

Study Start Date

2002-05-31

Study Completion Date

2007-10-31

Brief Summary

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RATIONALE: Eating a diet high in soy foods may slow the progression of some types of cancer. Isoflavones are compounds found in soy food that may slow the growth of prostate cancer cells and prevent further development of prostate cancer. Radiation therapy uses high-energy x-rays to kill tumor cells. Giving isoflavones together with radiation therapy may be an effective treatment for prostate cancer.

PURPOSE: This randomized phase II trial is studying the side effects and how well giving isoflavones together with radiation therapy works in treating patients with localized prostate cancer.

Detailed Description

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OBJECTIVES:

* Determine the effect of soy protein isolate (isoflavones) and radiotherapy on the modulation of biomarkers in patients with localized prostate cancer.
* Determine the toxicity of this regimen in these patients.
* Determine the effect of this regimen on the quality of life of these patients.

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

* Arm I: Patients receive oral soy protein isolate (isoflavones) twice daily for 6 months in the absence of disease progression or unacceptable toxicity.
* Arm II: Patients receive an oral placebo twice daily for 6 months in the absence of disease progression or unacceptable toxicity.

In both arms, patients also undergo radiotherapy while receiving isoflavones or placebo.

Quality of life is assessed periodically.

PROJECTED ACCRUAL: A total of 70 patients will be accrued for this study.

Conditions

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Prostate Cancer

Study Design

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Allocation Method

RANDOMIZED

Primary Study Purpose

TREATMENT

Interventions

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soy protein isolate

Intervention Type DIETARY_SUPPLEMENT

radiation therapy

Intervention Type RADIATION

Eligibility Criteria

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Inclusion Criteria

PATIENT CHARACTERISTICS:

Performance status

* 0-3

Life expectancy

* Not specified

Hematopoietic

* Not specified

Hepatic

* Not specified

Renal

* Not specified

Other

* No organ function restrictions

PRIOR CONCURRENT THERAPY:

Chemotherapy

* No prior chemotherapy

Endocrine therapy

* No prior hormonal therapy

Radiotherapy

* See Disease Characteristics

Other

* No other concurrent micronutrient supplements, herbs, or vitamins except 1 daily multivitamin
Minimum Eligible Age

18 Years

Eligible Sex

MALE

Accepts Healthy Volunteers

No

Sponsors

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National Cancer Institute (NCI)

NIH

Sponsor Role collaborator

Barbara Ann Karmanos Cancer Institute

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Omer Kucuk, MD

Role: STUDY_CHAIR

Barbara Ann Karmanos Cancer Institute

Locations

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Barbara Ann Karmanos Cancer Institute

Detroit, Michigan, United States

Site Status

Countries

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United States

Other Identifiers

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P30CA022453

Identifier Type: NIH

Identifier Source: secondary_id

View Link

WSU-D-2325

Identifier Type: -

Identifier Source: secondary_id

CDR0000446088

Identifier Type: -

Identifier Source: org_study_id

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