About this trial
This is a randomized control trial testing the effect of walnut supplementation on prostate cancer progression in 50 men with biopsy confirmed prostate cancer and planning to undergo RP. Patients consented to the study will be randomly assigned to either continue their usual diets (control arm) or to the walnut arm for 4-10 weeks depending on the window between their consent date and the date for RP.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Pathologically confirmed prostate adenocarcinoma.
Diagnostic biopsy cores with ≥10 cores with each core examined separately to determine exact tumor location.
Biopsy grade group 2 or higher (Gleason ≥7).
Planning to undergo RP.
Disqualifiers
Allergy to nuts.
History of receiving hormone therapy or antiandrogen therapy.
Use of 5-alpha reductase inhibitors in the past 6 months.
Prior prostate radiotherapy (external beam or brachytherapy) or prior prostate cryotherapy.
Trial design
Parallel
Treatments tested in this trial
walnuts
Other intervention2 ounces of walnuts daily for 4-10 weeks
usual diet
Other interventionSubject continues usual diet
phone counseling with dietitian
Other interventionWeekly calls with dietitian
Treatment groups
Trial outcomes
Primary outcomes
Mean difference in prostatic tissue Ki67 expression from baseline biopsy to RP
Secondary outcomes
Mean difference in prostatic tissue oxidative stress from baseline biopsy to RP
Measured by prostate tissue 8-hydroxy-2-deoxyguanosine
Mean difference in prostatic tissue inflammation from baseline biopsy to RP
Measured by 8-hydroxy-2-deoxyguanosine and immune cell infiltration
Sponsors and contacts
Click on the lead sponsor to view all of their trials.
Stephen Freedland
Lead sponsor
Cedars-Sinai Medical Center
Sponsor institution
California Walnut Commission
Collaborator