This randomized phase I trial studies the side effects and best dose of defined green tea catechin extract in treating women with hormone receptor-negative stage I-III breast cancer. Green tea extract contains ingredients that may prevent or slow the growth of breast cancer.
PRIMARY OBJECTIVES: I. Demonstrate the safety of green tea catechin extract (Polyphenon E) in women with a history of hormone receptor-negative breast cancer. II. Determine the maximum tolerated dose of Polyphenon E in women with a history of hormone receptor-negative breast cancer. SECONDARY OBJECTIVES: I. Determine the efficacy of Polyphenon E in modulating histologic changes (nonproliferative, proliferative without atypia, atypical hyperplasia) on core biopsy of the contralateral breast. II. Determine the efficacy of Polyphenon E in modulating immunohistochemical expression of Ki-67 (proliferation index), p53, EGFR, HER2/neu, cleaved caspase-3 (apoptosis marker), and estrogen receptor on core biopsy tissue of the contralateral breast. III. Determine the efficacy of Polyphenon E in modulating mammographic breast density of the contralateral breast. IV. Determine the efficacy of Polyphenon E in modulating hormone metabolites (serum estradiol, testosterone, IGF-1, IGFBP-3, SHBG). V. Determine the efficacy of Polyphenon E in modulating eicosanoid levels (urine PGE-M). VI. Determine the efficacy of Polyphenon E in modulating biomarkers of oxidative damage (urine 8-OHdG, isoprostane). VII. Determine the efficacy of Polyphenon E in modulating serum C-reactive protein. VIII. Determine the activity of Polyphenon E in relation to COMT genotype. IX. Assess quality of life and attitudes toward complementary and alternative medicine in women with a history of breast cancer. OUTLINE: This is a dose-escalation study. Patients are randomized to 1 of 2 treatment arms. ARM I: Patients receive defined green tea catechin extract orally (PO) twice daily (BID) for 6 months in the absence of disease progression or unacceptable toxicity. ARM II: Patients receive placebo PO BID for 6 months in the absence of disease progression or unacceptable toxicity. Patients undergo a core biopsy and mammogram of the contralateral breast at baseline and after 6 months for histological evaluation, IHC analysis, and mammographic density reading. Core biopsy tissue is assessed for proliferative changes and presence of atypia using standardized histological criteria. Core biopsy tissue is also analyzed by IHC for the following proteins: Ki-67 (proliferation index), p53, EGFR, HER2/neu, cleaved caspase-3 (apoptosis marker), and estrogen receptor (ER). Blood and urine samples are collected at baseline and every 2 months during treatment to measure drug effect biomarkers: serum estradiol, testosterone, insulin-like growth factor-1 (IGF-1), IGF binding protein-3 (IGFBP-3), and sex hormone-binding globulin (SHBG) by immunological laboratory methods; urine prostaglandin levels (PGE-M) by tandem mass spectrometry; urine oxidative damage markers (8-OHdG, isoprostane) and serum C-reactive protein (CRP) by ELISA; and catechol-O-methyltransferase (COMT) genotype (at baseline only). Patients complete a questionnaire assessing quality of life (SF-36) and attitudes toward complementary and alternative medicine at baseline and at 6 months. After completion of study treatment, patients are followed for 1 month.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
40
Given PO
Ancillary studies
Ancillary studies
Correlative studies
Given PO
Columbia University Medical Center
New York, New York, United States
Memorial Sloan-Kettering Cancer Center
New York, New York, United States
Baylor College of Medicine
Houston, Texas, United States
M D Anderson Cancer Center
Houston, Texas, United States
MTD defined as the dose that causes 25% DLT assessed using NCI CTCAE version 3.0
Time frame: 6 months
Breast tissue histology (nonproliferative, proliferative without atypia, atypical hyperplasia)
Generalized linear models will be used.
Time frame: Up to 6 months
COMT genotype
Generalized linear models will be used.
Time frame: Up to 6 months
Quality-of-life measures assessed using SF-36
Generalized linear models will be used.
Time frame: Up to 6 months
Protein expression levels in benign breast tissue (Ki-67, p53, EGFR, HER2/neu, cleaved caspase-3, and ER)
Generalized linear models will be used.
Time frame: Up to 6 months
Quantitative mammographic breast density
Generalized linear models will be used.
Time frame: Up to 6 months
Hormone metabolite levels (estradiol, testosterone, IGF-1, IGFBP-3, SHBG)
Generalized linear models will be used.
Time frame: Up to 6 months
Eicosanoid levels (urine PGE-M)
Generalized linear models will be used.
Time frame: Up to 6 months
Levels of oxidative damage biomarkers (urine 8-OHdG, isoprostane)
Generalized linear models will be used.
Time frame: Up to 6 months
Serum CRP levels
Generalized linear models will be used.
Time frame: Up to 6 months
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.