Effects of GCP on Prostate Cancer.

Completed · Not applicable

Conditions studied: Prostate Cancer

In brief

Genistein Combined Polysaccharide (GCP) is derived from adding soy powder to shiitake mushrooms. This concentrated mixture is currently being sold in Japan and the United States and is thought to possibly contain properties that may be useful in treating certain types of cancer.

Key facts

Study ID

NCT00269555

Run by

University of California, Davis

People needed

62

Starts

2004-05-01

Expected to finish

2006-09-01

Last updated by the study team

2010-06-29

Who can join

Age: any. Sex: male. Healthy volunteers: not accepted.

You may qualify if…

• Participants must be male and have a pathological diagnosis of prostate cancer.
• No treatment (surgery [RRP], radiation, or hormones) prior to study entry.
• The patient has decided, after consultation with his own doctor, to have no treatment intervention (surgery [RRP], radiation, or hormones) for the next six months.
• PSA between 2.0 and 10.0 ng/ml.
• If PSA is >10.0, patient must have been on Active Surveillance for 12 months prior to study initiation.
• No known allergy to soy or soy products.
• The patient is not currently taking more than 2 grams of genistein a day in nutritional or diet enhancing supplements (OTC supplements).

You may not qualify if…

• No pathological documentation of prostate cancer.
• Allergy to soy or soy products
• Prior history of treatment for prostate cancer.

Where it is running

• University of California, Davis — Sacramento, California, United States

Full record on ClinicalTrials.gov

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