Green Tea Extract in Treating Patients With Metastatic Prostate Cancer That Has Not Responded to Hormone Therapy

July 12, 2016 updated by: Alliance for Clinical Trials in Oncology

A Phase II Trial of Green Tea Extract in the Treatment of Androgen-Independent Metastatic Prostate Cancer

RATIONALE: Green tea extract contains substances that may slow the growth of certain cancers and may prevent the development of new cancers.

PURPOSE: Phase II trial to determine the effectiveness of green tea extract in treating patients who have metastatic prostate cancer that has not responded to hormone therapy.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

OBJECTIVES: I. Determine the effectiveness and toxicity of green tea extract in patients with androgen-independent metastatic prostate cancer. II. Determine the response rate and response duration in patients treated with this regimen. III. Determine whether a decline in prostate-specific antigen (PSA) coincides with evidence of disease regression in these patients.

OUTLINE: Patients receive oral green tea extract six times daily for 4 months. Patients with a 50% decline in PSA, complete or partial response, or stable disease after 4 months continue treatment in the absence of disease progression or unacceptable toxicity. Patients with disease progression after 4 months receive no further treatment. Patients are followed every 3 months for 5 years or until disease progression. If disease progression, patients are followed every 6 months for 5 years.

Study Type

Interventional

Enrollment (Actual)

54

Phase

  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Arizona
      • Scottsdale, Arizona, United States, 85259-5404
        • CCOP - Scottsdale Oncology Program
    • Illinois
      • Peoria, Illinois, United States, 61602
        • CCOP - Illinois Oncology Research Association
      • Urbana, Illinois, United States, 61801
        • CCOP - Carle Cancer Center
    • Iowa
      • Cedar Rapids, Iowa, United States, 52403-1206
        • CCOP - Cedar Rapids Oncology Project
      • Des Moines, Iowa, United States, 50309-1016
        • CCOP - Iowa Oncology Research Association
      • Sioux City, Iowa, United States, 51101-1733
        • Siouxland Hematology-Oncology
    • Kansas
      • Wichita, Kansas, United States, 67214-3882
        • CCOP - Wichita
    • Minnesota
      • Duluth, Minnesota, United States, 55805
        • CCOP - Duluth
      • Rochester, Minnesota, United States, 55905
        • Mayo Clinic Cancer Center
      • Saint Louis Park, Minnesota, United States, 55416
        • CCOP - Metro-Minnesota
    • Nebraska
      • Omaha, Nebraska, United States, 68131
        • CCOP - Missouri Valley Cancer Consortium
    • North Dakota
      • Bismarck, North Dakota, United States, 58501
        • Medcenter One Health System
      • Fargo, North Dakota, United States, 58122
        • CCOP - Merit Care Hospital
    • Ohio
      • Toledo, Ohio, United States, 43623-3456
        • CCOP - Toledo Community Hospital Oncology Program
    • South Dakota
      • Rapid City, South Dakota, United States, 57709
        • Rapid City Regional Hospital
      • Sioux Falls, South Dakota, United States, 57105-1080
        • CCOP - Sioux Community Cancer Consortium

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

Male

Description

DISEASE CHARACTERISTICS: Clinically proven androgen-independent metastatic prostate cancer Radiological, physically palpable, and/or biochemical evidence of progression Increase in PSA after orchiectomy or hormonal treatment No symptoms directly attributable to metastatic disease No CNS metastases or carcinomatous meningitis

PATIENT CHARACTERISTICS: Age: 18 and over Performance status: ECOG 0-2 Life expectancy: At least 12 weeks Hematopoietic: Not specified Hepatic: Bilirubin no greater than 1.5 mg/dL Renal: Creatinine no greater than 2 times upper limit of normal Cardiovascular: No uncontrolled high blood pressure No unstable angina No symptomatic congestive heart failure No uncontrolled cardiac arrhythmias No myocardial infarction in past 6 months Other: No other malignancy within the past 5 years except basal cell skin cancer No uncontrolled diabetes mellitus or inability to tolerate high sugar content of green tea at discretion of oncologist No other medical or psychiatric conditions that would preclude study

PRIOR CONCURRENT THERAPY: Biologic therapy: At least 4 weeks since prior immunotherapy Chemotherapy: At least 4 weeks since prior chemotherapy No concurrent chemotherapy Endocrine therapy: At least 4 weeks since prior flutamide or megestrol At least 6 weeks since prior longer-acting hormonal agents such as bicalutamide At least 4 weeks since prior hormonal therapy, except luteinizing hormone- releasing hormone agonist No concurrent hormonal therapy, including corticosteroids for cancer treatment Radiotherapy: No concurrent radiotherapy Surgery: See Disease Characteristics Other: No other concurrent investigational agents

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: green tea extract
Patients receive oral green tea extract six times daily for 4 months. Patients with a 50% decline in PSA, complete or partial response, or stable disease after 4 months continue treatment in the absence of disease progression or unacceptable toxicity. Patients with disease progression after 4 months receive no further treatment. Patients are followed every 3 months for 5 years or until disease progression. If disease progression, patients are followed every 6 months for 5 years.
Dietary supplement: green tea extract

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Response rate and duration
Time Frame: Up to 5 years
Up to 5 years
Disease-regression
Time Frame: Up to 5 years
Up to 5 years

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Alliance for Clinical Trials in Oncology

Collaborators

National Cancer Institute (NCI)

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

December 1, 2000

Primary Completion (Actual)

March 1, 2003

Study Completion (Actual)

June 1, 2008

Study Registration Dates

First Submitted

June 2, 2000

First Submitted That Met QC Criteria

April 19, 2004

First Posted (Estimate)

April 20, 2004

Study Record Updates

Last Update Posted (Estimate)

July 13, 2016

Last Update Submitted That Met QC Criteria

July 12, 2016

Last Verified

July 1, 2016

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • NCCTG-N9951
  • CDR0000067842 (Registry Identifier: PDQ (Physician Data Query))

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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