Green Tea Extract (Polyphenon E) in Preventing Cancer in Healthy Participants

2014-08-27 03:54:04 | BioPortfolio


RATIONALE: Green tea extract (Polyphenon E) contains ingredients that may prevent the development of cancer.

PURPOSE: This phase I trial is studying how well green tea extract works in preventing cancer in healthy participants.




- Determine the effect of green tea extract (Polyphenon E) on cytochrome P450 enzyme activities and glutathione S-transferase activities and levels in healthy participants.


- Determine the safety and tolerability of this drug in these participants.

OUTLINE: This is an open-label study.

Participants receive oral green tea extract (Polyphenon E) once daily for 4 weeks in the absence of unacceptable toxicity.

Participants are followed for 2 weeks.

PROJECTED ACCRUAL: A total of 44 participants will be accrued for this study.

Study Design

Masking: Open Label, Primary Purpose: Prevention


Unspecified Adult Solid Tumor, Protocol Specific


defined green tea catechin extract


Arizona Cancer Center at University of Arizona Health Sciences Center
United States




University of Arizona

Results (where available)

View Results


Published on BioPortfolio: 2014-08-27T03:54:04-0400

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Medical and Biotech [MESH] Definitions

An antioxidant flavonoid, occurring especially in woody plants as both (+)-catechin and (-)-epicatechin (cis) forms.

A dehydrated extract of thyroid glands. After the removal of fat and connective tissue, the extract is dried or lyophilized to yield a yellowish to buff-colored amorphous powder containing 0.17-0.23% of iodine.

A solid, unencapsulated tumor of the KIDNEY composed of spindle mesenchymal cells that resemble FIBROBLASTS or muscle cells. The homogeneous mass typically extends into the renal parenchyma and replaces most of the kidney. In most cases, mesoblastic nephroma is benign and occurs in the fetus or newborn, and rarely in the older child or the adult.

A transplantable, poorly differentiated malignant tumor which appeared originally as a spontaneous breast carcinoma in a mouse. It grows in both solid and ascitic forms.

Any liquid or solid preparation made specifically for the growth, storage, or transport of microorganisms or other types of cells. The variety of media that exist allow for the culturing of specific microorganisms and cell types, such as differential media, selective media, test media, and defined media. Solid media consist of liquid media that have been solidified with an agent such as AGAR or GELATIN.

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