Stage I Prostate Cancer Clinical Trial
Official title:
Phase II, Randomized, Double Blind, Placebo Controlled Pilot Study of Polyphenon E in Men With Localized Prostate Cancer Scheduled to Undergo Radical Prostatectomy
Verified date | March 2012 |
Source | Case Comprehensive Cancer Center |
Contact | n/a |
Is FDA regulated | No |
Health authority | United States: Federal Government |
Study type | Interventional |
This randomized pilot phase II trial studies the side effects and how well defined green tea catechin extract works in treating patients with localized prostate cancer undergoing surgery. Defined green tea catechin extract contains ingredients that may prevent or slow the growth of certain cancers.
Status | Terminated |
Enrollment | 5 |
Est. completion date | April 2007 |
Est. primary completion date | April 2007 |
Accepts healthy volunteers | No |
Gender | Male |
Age group | 45 Years to 75 Years |
Eligibility |
Inclusion Criteria: - Prostate biopsy positive for cancer; clinically localized T1 and T2 stage disease expected, with biopsy specimen available for baseline biomarker measurements - Scheduled for a radical prostatectomy - Willing to sign an Institutional Review Board (IRB)-approved informed consent document and adhere to the protocol - Willing and able to take oral medications - Willing to refrain from drinking any kind of tea (including herbal tea) or using supplements containing green tea constituents for the duration of the study Exclusion Criteria: - Prior hormonal or surgical therapy for prostate cancer; including prior brachytherapy or radiation therapy - Recent consumption of tea (six or more cups per day) or use of supplements containing green tea within one week of randomization - Signs or symptoms of progressive or uncontrolled renal, hepatic, hematologic, endocrine, pulmonary, cardiac, neurologic or cerebral disease - Serum creatinine >= 1.5 x upper limit of normal (ULN) - Alanine aminotransferase (ALT) >= ULN - Aspartate aminotransferase (AST) >= ULN - Alkaline phosphatase (ALP) >= ULN - Albumin (ALB) =< lower limit of normal (LLN) - Total bilirubin >= ULN - Known malignancy at any site within the last five years; with the exception of basal cell carcinoma (BCC) - Participation in a research trial within the past three months - Any condition that would interfere with the ability to give informed consent or comply with the study protocol - Hypersensitivity to tea products or any of the inactive ingredients found in the drug product capsules - Concomitant use of at least 400 mg per day of a nonsteroidal anti-inflammatory (NSAID) agent two or more times per week |
Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double-Blind, Primary Purpose: Treatment
Country | Name | City | State |
---|---|---|---|
United States | Case Medical Center, University Hospitals Seidman Cancer Center, Case Comprehensive Cancer Center | Cleveland | Ohio |
Lead Sponsor | Collaborator |
---|---|
Case Comprehensive Cancer Center | National Cancer Institute (NCI) |
United States,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Change in levels of intermediate biomarkers in prostate tissue (Ki-67, Bcl2, cyclin D, KiP1/P27, VEGF, and CD31) during treatment with defined green tea catechin extract or placebo during the period between biopsy and prostatectomy | Baseline and at or after 6 weeks of treatment | No | |
Secondary | Changes in the levels of free (f) PSA | PSA exists in the serum in different molecular forms and that the proportion of "complexed" PSA (PSA-ACT) to "free" PSA(F-PSA) is higher in prostate cancer patients [16]. F-PSA-to-PSA ratio remains constant in men without prostate cancer while total PSA increases. This F-PSA to-PSA ratio is useful diagnostic tool with borderline total PSA values (4.0 to 10.0 ng/mL); additionally values of 20% to 25% F-PSA eliminates 1/3 of biopsies in some studies; and F-PSA of 15.6% and PSA-ACT of 26.7% yielded 95% sensitivity [17]. The F-PSA-to-PSA ratio does not correlate to grade or stage of cancer. | After 0, 4, and 6 weeks | No |
Secondary | Catechin levels | Extraction of Catechins from Prostate Tissue, plasma and urine samples | At baseline, 4 weeks after supplementation, and at time of surgery | No |
Secondary | Number of pts with adverse events as a measure of safety and tolerability | AEs will be recorded from the date the informed consent document is signed until the day of surgery. Liver function tests including the Hepatic Function Panel [Alanine Aminotransferase (ALT), Albumin, Alkaline Phosphatase (ALP), Aspartate Aminotransferace (AST), total and direct Bilirubin], as well as amylase and lipase tests will be monitored at baseline and every four (4) weeks for the duration of the study. | At baseline and every 4 weeks | Yes |
Secondary | Changes in the levels of total (t) PSA | PSA exists in the serum in different molecular forms and that the proportion of "complexed" PSA (PSA-ACT) to "free" PSA(F-PSA) is higher in prostate cancer patients [16]. F-PSA-to-PSA ratio remains constant in men without prostate cancer while total PSA increases. This F-PSA to-PSA ratio is useful diagnostic tool with borderline total PSA values (4.0 to 10.0 ng/mL); additionally values of 20% to 25% F-PSA eliminates 1/3 of biopsies in some studies; and F-PSA of 15.6% and PSA-ACT of 26.7% yielded 95% sensitivity [17]. The F-PSA-to-PSA ratio does not correlate to grade or stage of cancer. | After 0, 4, and 6 weeks | No |
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