Study of Genistein in Reducing Side Effects of Superficial Bladder Cancer Treatment

Phase 2

Completed

Brief Summary: Patients with non-invasive bladder cancer are often treated with intravesical therapy in order to prevent the recurrence of bladder cancer. Intravesical therapy can cause many lower urinary tract symptoms, which can limit the dose of therapy and therefore efficacy of treatment. There have been a number of studies that suggest a chemical found in soy beans may be able to help with these side effects. This chemical is called genistein and can be extracted and given to study subjects in pill form. In this study, the investigators would like to have patients placed into two different groups. One group would take genistein and the other group would take a placebo, a sugar pill that looks like the genistein pill. In doing this study the investigators hope to explore the findings from other studies to see if lower urinary tract symptoms are reduced and to see if recurrence rates for patients are affected by genistein. The study would take about four and a half months total.

Detailed Description: Patients who are treated with bacillus Calmette-Guerin (BCG) intravesical therapy for non-muscle invasive (TaT1) Tis superficial bladder cancer often develop adverse effects (urinary tract symptoms) which limit the dose (and therefore the efficacy) of therapy and result in poor quality of life. Genistein is a nutritional supplement with anti-inflammatory properties which might help alleviate adverse effects of intravesical therapy that are due to inflammation. Additionally, genistein also has anti-tumor and immunopotentiating properties and has been shown to have no known side effects. Our hypothesis is that genistein given together with BCG intravesical therapy will reduce its adverse effects and improve the efficacy of therapy. Patients (N=88) scheduled for intravesical therapy will be randomly assigned to take 30 mg tablets PO TID of genistein supplement (N=44) or placebo (N=44) during therapy and one month post therapy.

Recruitment & Eligibility

Inclusion Criteria

Exclusion Criteria

Arm && Interventions

Group	Intervention	Description
Sugar pill	Sugar pill	Patients will be given placebo pills for 10 weeks.
Genistein supplement	Genistein	30 mg of genistein supplement by mouth three times daily (PO TID) for 10 weeks.

Primary Outcome Measures

Name	Time	Method
Change in Severity of Urinary Symptoms as Determined by the The International Prostate Symptom Score (IPSS) Questionnaire Score.	At baseline and after 6 weeks of treatment	The change in severity of urinary symptoms as determined by the International Prostate Symptom Score (IPSS) questionnaire score. IPSS scores at 6 weeks of treatment will be compared to scores at baseline of treatment. Lower values indicate a better outcome. 0 to 7 points: Mild symptoms 8 to 19 points: Moderate symptoms 20 to 35 points: Severe symptoms

Secondary Outcome Measures

Name	Time	Method
Number of Participants With Cancer Recurrence Determined at 10-week Biopsy.	At 10 weeks of treatment.	A secondary study endpoint will be the presence of cancer and the rate of recurrence as determined by the 10-week biopsy or subsequent standard follow-up visits.

Locations (3): Emory Saint Joseph's Hospital
🇺🇸
Atlanta, Georgia, United States
Emory University Hospital Midtown
🇺🇸
Atlanta, Georgia, United States
Emory University Department of Urology
🇺🇸
Atlanta, Georgia, United States