# Green Tea Extract in Treating Patients With Nonmetastatic Bladder Cancer

> **NCT00666562** · PHASE2 · COMPLETED · sponsor: **National Cancer Institute (NCI)** · enrollment: 31 (actual)

## Conditions studied

- Stage I Bladder Cancer
- Stage II Bladder Cancer
- Stage III Bladder Cancer

## Interventions

- **DIETARY_SUPPLEMENT:** Defined Green Tea Catechin Extract
- **OTHER:** Laboratory Biomarker Analysis
- **OTHER:** Pharmacological Study
- **DRUG:** Placebo
- **PROCEDURE:** Therapeutic Conventional Surgery

## Key facts

- **NCT ID:** NCT00666562
- **Lead sponsor:** National Cancer Institute (NCI)
- **Sponsor class:** NIH
- **Phase:** PHASE2
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2008-07-02
- **Primary completion:** 2012-04-26
- **Final completion:** 2017-06-09
- **Target enrollment:** 31 (ACTUAL)
- **Last updated:** 2017-11-17


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00666562

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00666562, "Green Tea Extract in Treating Patients With Nonmetastatic Bladder Cancer". Retrieved via AI Analytics 2026-06-24 from https://api.ai-analytics.org/clinical/NCT00666562. Licensed CC0.

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