Independent directory Public ClinicalTrials.gov records United States
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ClinicalTrials.gov public records Last synced Sep 26, 2026, 10:42 AM EDT

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Showing 1–10 of 10 matching trials from the live ClinicalTrials.gov search.
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Conditions
Estrogen Receptor-negative Breast Cancer, Progesterone Receptor-negative Breast Cancer, Stage I Breast Cancer, Stage II Breast Cancer, Stage IIIA Breast Cancer, Stage IIIB Breast Cancer
Interventions
placebo, quality-of-life assessment, questionnaire administration, laboratory biomarker analysis, defined green tea catechin extract
Other · Procedure · Drug
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
21 Years to 65 Years · Female only
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
4
States / cities
New York, New York • Houston, Texas
Conditions
Adenocarcinoma of the Prostate, Stage I Prostate Cancer, Stage II Prostate Cancer
Interventions
defined green tea catechin extract, placebo, immunohistochemistry staining method, immunoenzyme technique, laboratory biomarker analysis, biopsy, mass spectrometry, high performance liquid chromatography
Dietary Supplement · Drug · Other + 1 more
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older · Male only
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
1
States / cities
Tucson, Arizona
Conditions
Stage I Prostate Cancer, Stage IIA Prostate Cancer, Stage IIB Prostate Cancer
Interventions
defined green tea catechin extract, placebo, immunohistochemistry staining method, immunoenzyme technique, questionnaire administration, therapeutic conventional surgery, high performance liquid chromatography, mass spectrometry
Dietary Supplement · Other · Procedure
Lead sponsor
Case Comprehensive Cancer Center
Other
Eligibility
45 Years to 75 Years · Male only
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
1
States / cities
Cleveland, Ohio
Conditions
Unspecified Adult Solid Tumor, Protocol Specific
Interventions
defined green tea catechin extract
Dietary Supplement
Lead sponsor
University of Arizona
Other
Eligibility
18 Years and older
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2004
U.S. locations
1
States / cities
Tucson, Arizona
Conditions
Cervical Cancer, Cervical Intraepithelial Neoplasia Grade 1, Human Papilloma Virus Infection
Interventions
placebo, defined green tea catechin extract, laboratory biomarker analysis
Drug · Dietary Supplement · Other
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older · Female only
Enrollment
98 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2011
U.S. locations
1
States / cities
Tucson, Arizona
Conditions
Cirrhosis
Interventions
Biopsy, Biospecimen Collection, Computed Tomography, Defined Green Tea Catechin Extract, Laboratory Biomarker Analysis, Magnetic Resonance Imaging, Pharmacological Study, Questionnaire Administration, Ultrasound
Procedure · Drug · Other
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2024
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Conditions
Multiple Myeloma and Plasma Cell Neoplasm, Precancerous Condition
Interventions
defined green tea catechin extract, gene expression analysis, protein analysis, laboratory biomarker analysis
Dietary Supplement · Genetic · Other
Lead sponsor
Barbara Ann Karmanos Cancer Institute
Other
Eligibility
18 Years and older
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
1
States / cities
Detroit, Michigan
Conditions
Stage I Bladder Cancer, Stage II Bladder Cancer, Stage III Bladder Cancer
Interventions
Defined Green Tea Catechin Extract, Laboratory Biomarker Analysis, Pharmacological Study, Placebo, Therapeutic Conventional Surgery
Dietary Supplement · Other · Drug + 1 more
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2017
U.S. locations
6
States / cities
Birmingham, Alabama • Burlington, Massachusetts • Minneapolis, Minnesota + 3 more
Conditions
Barrett Esophagus
Interventions
placebo, defined green tea catechin extract
Other · Drug
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older
Enrollment
55 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2010
U.S. locations
3
States / cities
New York, New York • Houston, Texas
Conditions
Advanced Colorectal Adenomas, Adenocarcinoma of the Colon, Stage I Colon Cancer, Stage II Colon Cancer, Stage III Colon Cancer
Interventions
defined green tea catechin extract, placebo, questionnaire administration, laboratory biomarker analysis
Drug · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
40 Years and older
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
3
States / cities
Chicago, Illinois • Hines, Illinois • Rochester, Minnesota