Skip to content

Green Tea Extract in Treating Patients With Nonmetastatic Bladder Cancer

A Phase II Randomized, Placebo-Controlled Trial of Polyphenon E to Evaluate Bladder Tissue Levels of EGCG

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00666562
Enrollment
31
Registered
2008-04-25
Start date
2008-07-02
Completion date
2017-06-09
Last updated
2017-11-17

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Stage I Bladder Cancer, Stage II Bladder Cancer, Stage III Bladder Cancer

Brief summary

Green tea extract contains ingredients that may slow the growth of certain cancers. It is not yet known whether green tea extract is more effective than a placebo when given before surgery in treating patients with bladder. This randomized phase II trial is studying green tea extract to see how well it works compared to a placebo when given before surgery in treating patients with nonmetastatic bladder cancer.

Detailed description

PRIMARY OBJECTIVES I. To compare the levels of epigallocatechin-3-gallate (EGCG) in nonmalignant bladder tissue from patients with bladder cancer treated with oral polyphenon E 800 mg EGCG or polyphenon E 1200 mg EGCG once daily for 14-28 days. SECONDARY OBJECTIVES: I. To compare the levels of EGCG in nonmalignant versus malignant bladder tissue samples from these patients. II. To examine the dose-response modulation of surrogate intermediate endpoint biomarkers (e.g., Proliferating Cell Nuclear Antigen \[PCNA\], Matrix Metallopeptidase 2 \[MMP2\], clusterin, Vascular endothelial Growth Factor \[VEGF\], p27, and ODC) in malignant and nonmalignant samples of bladder tissue from these patients after administration of polyphenon E. III. To correlate EGCG levels in samples of serum, urine, and tissue from these patients. IV. To examine the levels of other catechins (i.e., epicatechin, epicatechin gallate, and epigallocatechin) found in polyphenon E in samples of serum, urine, and tissue from these patients. V. To compare the metabolism of EGCG by Catechol-O-Methyltransferase (COMT) and Uridinediphosphate-Glucuronosyltransferase (UGT) in relation to pharmacogenetic polymorphisms in COMT and UGT in samples of serum, urine, and tissue from these patients. VI. To examine the changes in serum Insulin Growth Factor 1 (IGF-1) and IGFBP-3 levels after administration of polyphenon E in these patients. OUTLINE: This is a multicenter study. Patients are stratified according to tumor site and disease invasiveness (invasive vs noninvasive). Patients are randomized to 1 of 3 treatment arms. Arm I: Patients receive six oral placebo capsules once daily for 14-28 days in the absence of unacceptable toxicity. Arm II: Patients receive four oral polyphenon E capsules and two oral placebo capsules once daily for 14-28 days in the absence of unacceptable toxicity. Arm III: Patients receive six oral polyphenon E capsules once daily for 14-28 days in the absence of unacceptable toxicity. After completion of study treatment, patients undergo trans-urethral resection of bladder tumor or cystectomy. Blood, urine, and tissue samples are obtained at baseline and at the end of study treatment for correlative laboratory studies. Samples are evaluated for pharmacokinetics of polyphenon E using high performance liquid chromatography. Levels of epigallocatechin-3-gallate \[EGCG\] and other catechins found in polyphenon E are assessed for correlation in serum, urine, and tissue. Intermediate endpoint biomarkers are evaluated for dose-response modulation in serum (i.e., IGF-1 and IGFBP-3) via ELISA and in bladder tissue obtained at the time of bladder surgery (i.e., PCNA, MMP2, clusterin, VEGF, p27, and ODS) via IHC. Patients at the University of Wisconsin undergo additional biopsy of bladder tissue for matrix-assisted laser desorption quadrupole time-of-flight (O-MALDI-qTOF) analysis of EGCG pharmacokinetics. Tissue samples are examined for intracellular concentration and distribution of EGCG. Genotyping studies for pyrosequencing of UGT and COMT polymorphisms are also performed.

Interventions

Given orally

OTHERLaboratory Biomarker Analysis

Correlative studies

OTHERPharmacological Study

Correlative studies

DRUGPlacebo

Given orally

PROCEDURETherapeutic Conventional Surgery

Undergo surgery

Sponsors

National Cancer Institute (NCI)
Lead SponsorNIH

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

Criteria: * Diagnosis of bladder cancer * Bladder tumor discovered on cystoscopy within the past 60 days * Invasive or non-invasive tumor * Primary tumor may represent either an initial diagnosis or recurrent disease of any clinical stage * No metastatic disease * Must be an eligible candidate for a partial cystectomy, radical cystectomy, or trans-urethral resection of bladder tumor (TURBT) * Has not undergone any treatment for superficial or invasive bladder cancer since the diagnostic cystoscopy * TURBT or radical cystectomy is the planned curative surgical treatment * ECOG performance status (PS) 0-1 OR Karnofsky PS 70-100% * More than 30 days since any prior intravesical therapy or adjuvant chemotherapy * More than 30 days since prior bladder surgery * Biopsies are not considered surgeries * No prior pelvic radiotherapy * No concurrent systemic chemotherapy for any other cancer, except nonmelanoma skin cancer * No concurrent NSAIDs (e.g., ibuprofen, naproxen, or cyclooxygenase-2 inhibitors) except =\< 81 mg aspirin per day * Concurrent acetaminophen (Tylenol) or prescription opioids combined with acetaminophen (i.e., Percocet, Darvocet, Vicodin, Tylenol #3) allowed for pain * No other concurrent investigational agents * White Blood Cell (WBC) \>= 3,000/mm\^3 * Platelet count \>= 100,000/mm\^3 * Hemoglobin \>= 10 g/dL * Alkaline phosphatase =\< upper limit of normal (ULN) * Bilirubin =\< ULN * Asparate Aminotransferase (AST) and Alanine Transaminase (ALT) =\< ULN * Sodium 135-144 mmol/L (inclusive) * Potassium 3.2-4.8 mmol/L (inclusive) * Chloride 85-114 mmol/L (inclusive) * Bicarbonate \>11 mEQ/dL * Negative pregnancy test * Fertile patients must use effective contraception * Willing to avoid green tea beverages and green tea-containing products during study participation * No evidence of other cancers, except nonmelanoma skin cancer * No history of allergic reactions attributed to tea or to any of the compounds of similar chemical or biologic composition to Polyphenon E or any of the inactive ingredients in Polyphenon E capsules * No uncontrolled intercurrent illness including, but not limited to, any of the following: Ongoing or active infection, Symptomatic congestive heart failure, Unstable angina pectoris, Cardiac arrhythmia, Psychiatric illness/social situations that would limit study compliance * More than 24 hours since prior and no concurrent consumption of any other green tea supplements or more than 2 cups (16 oz) of green tea either through dietary sources or through nutritional supplementation * Topical cosmetics (i.e., lotions, shampoos, makeup) that contain green tea are allowed * Creatinine normal * Not pregnant or nursing

Design outcomes

Primary

MeasureTime frameDescription
Epigallocatechin Gallate (EGCG) Levels in Nonmalignant Bladder Tissue (e.g., Normal-appearing Urothelium, Inflammatory Lesions in the Bladder, Sessile Noninvasive Bladder Tumors, and Papillary Noninvasive Bladder Tumors)up to 28 daysComparison of nonmalignant bladder tissue levels of EGCG between the placebo group and the EGCG groups combined using student t-test.

Secondary

MeasureTime frameDescription
Absolute Change From Baseline of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E in Urine SamplesBaseline and up to 28 daysThe difference between the amount at the end of study (up to 28 days) from baseline.
Levels of EGCG in Malignant Bladder Tissueup to 28 days
Levels of Surrogate Intermediate Endpoint Biomarkers in Malignant and Nonmalignant Bladder Tissue Assessed by Immunohistochemistryup to 28 days
Serum Insulin Growth Factor-1 (IGF-1) Levels Assessed by ELISABaseline and up to day 28
Levels of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E Tumor Tissue Samplesup to 28 days
Absolute Change From Baseline of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E Plasma SamplesBaseline and up to 28 daysThe difference between the amount at the end of study (up to 28 days) from baseline.
Metabolism of EGCG in Serum and Urine in Relation to Pharmacogenetic Polymorphisms in Catechol-O-Methyltransferase (COMT)At Baseline
Serum IGFBP-3 Levels Assessed by ELISABaseline and up to 28 days
Levels of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E Normal Tissue Samplesup to 28 days
Absolute Change for Baseline of EGCG in Urine SamplesBaseline and up to 28 daysThe difference between the amount at the end of study (up to 28 days) from baseline.
Metabolism of EGCG in Serum and Urine in Relation to Pharmacogenetic Polymorphisms in Uridinediphosphate- Glucuronosyltransferase (UGT)At Baseline
Absolute Change for Baseline From EGCG in Serum SamplesBaseline and up to 28 daysThe difference between the amount at the end of study (up to 28 days) from baseline.

Countries

United States

Participant flow

Recruitment details

Participants were recruited during a 4 year period by staff at 5 participating institutions (both University hospitals and community clinics).

Participants by arm

ArmCount
Arm I (Placebo)
Patients receive six oral placebo capsules once daily for 14-28 days. After completion of study treatment, patients undergo trans-urethral resection of bladder tumor or cystectomy. placebo: Given orally pharmacological study: Correlative studies laboratory biomarker analysis: Correlative studies
11
Arm II (800mg Polyphenon E, Placebo)
Patients receive four oral 800mg polyphenon E capsules and two oral placebo capsules once daily for 14-28 days in the absence of unacceptable toxicity.After completion of study treatment, patients undergo trans-urethral resection of bladder tumor or cystectomy. defined green tea catechin extract: Given orally placebo: Given orally pharmacological study: Correlative studies laboratory biomarker analysis: Correlative studies
10
Arm III (1200mg Polyphenon E)
Patients receive six oral 1200mg polyphenon E capsules once daily for 14-28 days in the absence of unacceptable toxicity. After completion of study treatment, patients undergo trans-urethral resection of bladder tumor or cystectomy. defined green tea catechin extract: Given orally therapeutic conventional surgery: Undergo surgery pharmacological study: Correlative studies laboratory biomarker analysis: Correlative studies
10
Total31

Withdrawals & dropouts

PeriodReasonFG000FG001FG002
Overall StudyConcomitant Medication010
Overall StudyWithdrawal by Subject010

Baseline characteristics

CharacteristicArm III (1200mg Polyphenon E)TotalArm I (Placebo)Arm II (800mg Polyphenon E, Placebo)
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
7 Participants18 Participants8 Participants3 Participants
Age, Categorical
Between 18 and 65 years
3 Participants13 Participants3 Participants7 Participants
Age, Continuous66.20 years
STANDARD_DEVIATION 9.55
67.23 years
STANDARD_DEVIATION 8.69
70.00 years
STANDARD_DEVIATION 7.04
65.20 years
STANDARD_DEVIATION 9.5
Ethnicity (NIH/OMB)
Hispanic or Latino
2 Participants7 Participants3 Participants2 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
8 Participants24 Participants8 Participants8 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Black or African American
1 Participants1 Participants0 Participants0 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
9 Participants30 Participants11 Participants10 Participants
Region of Enrollment
United States
10 participants31 participants11 participants10 participants
Sex: Female, Male
Female
2 Participants5 Participants2 Participants1 Participants
Sex: Female, Male
Male
8 Participants26 Participants9 Participants9 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
— / —— / —— / —
other
Total, other adverse events
3 / 115 / 106 / 10
serious
Total, serious adverse events
0 / 110 / 100 / 10

Outcome results

Primary

Epigallocatechin Gallate (EGCG) Levels in Nonmalignant Bladder Tissue (e.g., Normal-appearing Urothelium, Inflammatory Lesions in the Bladder, Sessile Noninvasive Bladder Tumors, and Papillary Noninvasive Bladder Tumors)

Comparison of nonmalignant bladder tissue levels of EGCG between the placebo group and the EGCG groups combined using student t-test.

Time frame: up to 28 days

ArmMeasureValue (MEAN)Dispersion
Arm I (Placebo)Epigallocatechin Gallate (EGCG) Levels in Nonmalignant Bladder Tissue (e.g., Normal-appearing Urothelium, Inflammatory Lesions in the Bladder, Sessile Noninvasive Bladder Tumors, and Papillary Noninvasive Bladder Tumors)0.00 ng/mLStandard Error 0
Arm II (800mg Polyphenon E, Placebo)Epigallocatechin Gallate (EGCG) Levels in Nonmalignant Bladder Tissue (e.g., Normal-appearing Urothelium, Inflammatory Lesions in the Bladder, Sessile Noninvasive Bladder Tumors, and Papillary Noninvasive Bladder Tumors)0.50 ng/mLStandard Error 1.42
Arm III (1200mg Polyphenon E)Epigallocatechin Gallate (EGCG) Levels in Nonmalignant Bladder Tissue (e.g., Normal-appearing Urothelium, Inflammatory Lesions in the Bladder, Sessile Noninvasive Bladder Tumors, and Papillary Noninvasive Bladder Tumors)1.72 ng/mLStandard Error 3.11
p-value: 0.046t-test, 2 sided
Secondary

Absolute Change for Baseline From EGCG in Serum Samples

The difference between the amount at the end of study (up to 28 days) from baseline.

Time frame: Baseline and up to 28 days

Population: Analysis was not able to be completed for 2 participants in Arm I and 1 participant in Arm II.

ArmMeasureValue (MEAN)Dispersion
Arm I (Placebo)Absolute Change for Baseline From EGCG in Serum Samples0.28 ng/mLStandard Deviation 1.11
Arm II (800mg Polyphenon E, Placebo)Absolute Change for Baseline From EGCG in Serum Samples82.33 ng/mLStandard Deviation 83.66
Arm III (1200mg Polyphenon E)Absolute Change for Baseline From EGCG in Serum Samples85.37 ng/mLStandard Deviation 76.34
Secondary

Absolute Change for Baseline of EGCG in Urine Samples

The difference between the amount at the end of study (up to 28 days) from baseline.

Time frame: Baseline and up to 28 days

Population: Analysis was not able to be completed for 3 participants in Arm I and 1 participant in Arm II.

ArmMeasureValue (MEAN)Dispersion
Arm I (Placebo)Absolute Change for Baseline of EGCG in Urine Samples0.00 ng/mLStandard Deviation 0
Arm II (800mg Polyphenon E, Placebo)Absolute Change for Baseline of EGCG in Urine Samples1.93 ng/mLStandard Deviation 0.98
Arm III (1200mg Polyphenon E)Absolute Change for Baseline of EGCG in Urine Samples3.38 ng/mLStandard Deviation 1.6
Secondary

Absolute Change From Baseline of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E in Urine Samples

The difference between the amount at the end of study (up to 28 days) from baseline.

Time frame: Baseline and up to 28 days

Population: Analysis was not able to be completed for 3 participants in Arm I and 1 participant in Arm II.

ArmMeasureGroupValue (MEAN)Dispersion
Arm I (Placebo)Absolute Change From Baseline of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E in Urine Samplesepicatechin (EC)0.52 ng/mLStandard Deviation 1.46
Arm I (Placebo)Absolute Change From Baseline of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E in Urine Samplesepicatechin gallate (ECG)0.00 ng/mLStandard Deviation 0
Arm I (Placebo)Absolute Change From Baseline of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E in Urine SamplesEpigallocatechin (EGC)0.20 ng/mLStandard Deviation 0.55
Arm II (800mg Polyphenon E, Placebo)Absolute Change From Baseline of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E in Urine Samplesepicatechin (EC)2.41 ng/mLStandard Deviation 3.15
Arm II (800mg Polyphenon E, Placebo)Absolute Change From Baseline of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E in Urine Samplesepicatechin gallate (ECG)1.13 ng/mLStandard Deviation 1.78
Arm II (800mg Polyphenon E, Placebo)Absolute Change From Baseline of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E in Urine SamplesEpigallocatechin (EGC)3.60 ng/mLStandard Deviation 3.21
Arm III (1200mg Polyphenon E)Absolute Change From Baseline of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E in Urine Samplesepicatechin gallate (ECG)1.49 ng/mLStandard Deviation 2.13
Arm III (1200mg Polyphenon E)Absolute Change From Baseline of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E in Urine SamplesEpigallocatechin (EGC)12.16 ng/mLStandard Deviation 11.09
Arm III (1200mg Polyphenon E)Absolute Change From Baseline of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E in Urine Samplesepicatechin (EC)5.33 ng/mLStandard Deviation 6.78
Secondary

Absolute Change From Baseline of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E Plasma Samples

The difference between the amount at the end of study (up to 28 days) from baseline.

Time frame: Baseline and up to 28 days

Population: Analysis was not able to be completed for 2 participants in Arm I and 1 participant in Arm II.

ArmMeasureGroupValue (MEAN)Dispersion
Arm I (Placebo)Absolute Change From Baseline of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E Plasma Samplesepicatechin (EC)0.00 ng/mLStandard Deviation 0
Arm I (Placebo)Absolute Change From Baseline of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E Plasma Samplesepicatechin gallate (ECG)0.17 ng/mLStandard Deviation 0.52
Arm I (Placebo)Absolute Change From Baseline of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E Plasma Samplesepigallocatechin (EGC)0.00 ng/mLStandard Deviation 0
Arm II (800mg Polyphenon E, Placebo)Absolute Change From Baseline of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E Plasma Samplesepicatechin (EC)0.97 ng/mLStandard Deviation 1.97
Arm II (800mg Polyphenon E, Placebo)Absolute Change From Baseline of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E Plasma Samplesepicatechin gallate (ECG)8.38 ng/mLStandard Deviation 11.03
Arm II (800mg Polyphenon E, Placebo)Absolute Change From Baseline of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E Plasma Samplesepigallocatechin (EGC)6.93 ng/mLStandard Deviation 10.06
Arm III (1200mg Polyphenon E)Absolute Change From Baseline of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E Plasma Samplesepicatechin gallate (ECG)8.62 ng/mLStandard Deviation 9.14
Arm III (1200mg Polyphenon E)Absolute Change From Baseline of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E Plasma Samplesepigallocatechin (EGC)3.46 ng/mLStandard Deviation 4.04
Arm III (1200mg Polyphenon E)Absolute Change From Baseline of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E Plasma Samplesepicatechin (EC)0.31 ng/mLStandard Deviation 0.66
Secondary

Levels of EGCG in Malignant Bladder Tissue

Time frame: up to 28 days

Population: Analysis was not able to be completed for 1 participant in Arm I, 1 participant in Arm II, and 3 participants in Arm III.

ArmMeasureValue (MEAN)Dispersion
Arm I (Placebo)Levels of EGCG in Malignant Bladder Tissue0.00 ng/mLStandard Deviation 0
Arm II (800mg Polyphenon E, Placebo)Levels of EGCG in Malignant Bladder Tissue0.00 ng/mLStandard Deviation 0
Arm III (1200mg Polyphenon E)Levels of EGCG in Malignant Bladder Tissue2.54 ng/mLStandard Deviation 2.92
Secondary

Levels of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E Normal Tissue Samples

Time frame: up to 28 days

Population: Analysis was not able to be completed for 2 participants in Arm I and 2 participants in Arm III.

ArmMeasureGroupValue (MEAN)Dispersion
Arm I (Placebo)Levels of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E Normal Tissue Samplesepicatechin (EC)0.00 ng/mLStandard Deviation 0
Arm I (Placebo)Levels of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E Normal Tissue Samplesepicatechin gallate (ECG)0.00 ng/mLStandard Deviation 0
Arm I (Placebo)Levels of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E Normal Tissue Samplesepigallocatechin (EGC)0.00 ng/mLStandard Deviation 0
Arm II (800mg Polyphenon E, Placebo)Levels of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E Normal Tissue Samplesepicatechin (EC)0.00 ng/mLStandard Deviation 0
Arm II (800mg Polyphenon E, Placebo)Levels of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E Normal Tissue Samplesepicatechin gallate (ECG)0.00 ng/mLStandard Deviation 0
Arm II (800mg Polyphenon E, Placebo)Levels of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E Normal Tissue Samplesepigallocatechin (EGC)0.20 ng/mLStandard Deviation 0.55
Arm III (1200mg Polyphenon E)Levels of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E Normal Tissue Samplesepicatechin gallate (ECG)0.00 ng/mLStandard Deviation 0
Arm III (1200mg Polyphenon E)Levels of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E Normal Tissue Samplesepigallocatechin (EGC)0.00 ng/mLStandard Deviation 0
Arm III (1200mg Polyphenon E)Levels of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E Normal Tissue Samplesepicatechin (EC)0.20 ng/mLStandard Deviation 0.55
Secondary

Levels of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E Tumor Tissue Samples

Time frame: up to 28 days

Population: Analysis was not able to be completed for 1 participant in Arm I, 1 participant in Arm II, and 3 participants in Arm III.

ArmMeasureGroupValue (MEAN)Dispersion
Arm I (Placebo)Levels of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E Tumor Tissue Samplesepicatechin (EC)0.00 ng/mLStandard Deviation 0
Arm I (Placebo)Levels of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E Tumor Tissue Samplesepicatechin gallate (ECG)0.00 ng/mLStandard Deviation 0
Arm I (Placebo)Levels of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E Tumor Tissue Samplesepigallocatechin (EGC)0.00 ng/mLStandard Deviation 0
Arm II (800mg Polyphenon E, Placebo)Levels of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E Tumor Tissue Samplesepicatechin (EC)0.00 ng/mLStandard Deviation 0
Arm II (800mg Polyphenon E, Placebo)Levels of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E Tumor Tissue Samplesepicatechin gallate (ECG)0.00 ng/mLStandard Deviation 0
Arm II (800mg Polyphenon E, Placebo)Levels of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E Tumor Tissue Samplesepigallocatechin (EGC)0.00 ng/mLStandard Deviation 0
Arm III (1200mg Polyphenon E)Levels of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E Tumor Tissue Samplesepicatechin gallate (ECG)0.00 ng/mLStandard Deviation 0
Arm III (1200mg Polyphenon E)Levels of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E Tumor Tissue Samplesepigallocatechin (EGC)0.60 ng/mLStandard Deviation 1.58
Arm III (1200mg Polyphenon E)Levels of Other Catechins (Epicatechin Gallate, Epicatechin, and Epigallocatechin) Found in Polyphenon E Tumor Tissue Samplesepicatechin (EC)0.00 ng/mLStandard Deviation 0
Secondary

Levels of Surrogate Intermediate Endpoint Biomarkers in Malignant and Nonmalignant Bladder Tissue Assessed by Immunohistochemistry

Time frame: up to 28 days

ArmMeasureGroupValue (MEAN)Dispersion
Arm I (Placebo)Levels of Surrogate Intermediate Endpoint Biomarkers in Malignant and Nonmalignant Bladder Tissue Assessed by ImmunohistochemistryVEGF0.011 optical densityStandard Deviation 0.0065
Arm I (Placebo)Levels of Surrogate Intermediate Endpoint Biomarkers in Malignant and Nonmalignant Bladder Tissue Assessed by ImmunohistochemistryClusterin0.074 optical densityStandard Deviation 0.032
Arm I (Placebo)Levels of Surrogate Intermediate Endpoint Biomarkers in Malignant and Nonmalignant Bladder Tissue Assessed by ImmunohistochemistryPCNA0.41 optical densityStandard Deviation 0.052
Arm I (Placebo)Levels of Surrogate Intermediate Endpoint Biomarkers in Malignant and Nonmalignant Bladder Tissue Assessed by ImmunohistochemistryMMP20.16 optical densityStandard Deviation 0.026
Arm I (Placebo)Levels of Surrogate Intermediate Endpoint Biomarkers in Malignant and Nonmalignant Bladder Tissue Assessed by Immunohistochemistryp270.36 optical densityStandard Deviation 0.08
Arm II (800mg Polyphenon E, Placebo)Levels of Surrogate Intermediate Endpoint Biomarkers in Malignant and Nonmalignant Bladder Tissue Assessed by ImmunohistochemistryClusterin0.061 optical densityStandard Deviation 0.02
Arm II (800mg Polyphenon E, Placebo)Levels of Surrogate Intermediate Endpoint Biomarkers in Malignant and Nonmalignant Bladder Tissue Assessed by ImmunohistochemistryPCNA0.38 optical densityStandard Deviation 0.061
Arm II (800mg Polyphenon E, Placebo)Levels of Surrogate Intermediate Endpoint Biomarkers in Malignant and Nonmalignant Bladder Tissue Assessed by ImmunohistochemistryMMP20.18 optical densityStandard Deviation 0.054
Arm II (800mg Polyphenon E, Placebo)Levels of Surrogate Intermediate Endpoint Biomarkers in Malignant and Nonmalignant Bladder Tissue Assessed by ImmunohistochemistryVEGF0.021 optical densityStandard Deviation 0.0173
Arm II (800mg Polyphenon E, Placebo)Levels of Surrogate Intermediate Endpoint Biomarkers in Malignant and Nonmalignant Bladder Tissue Assessed by Immunohistochemistryp270.35 optical densityStandard Deviation 0.09
Arm III (1200mg Polyphenon E)Levels of Surrogate Intermediate Endpoint Biomarkers in Malignant and Nonmalignant Bladder Tissue Assessed by Immunohistochemistryp270.31 optical densityStandard Deviation 0.057
Arm III (1200mg Polyphenon E)Levels of Surrogate Intermediate Endpoint Biomarkers in Malignant and Nonmalignant Bladder Tissue Assessed by ImmunohistochemistryVEGF0.013 optical densityStandard Deviation 0.0066
Arm III (1200mg Polyphenon E)Levels of Surrogate Intermediate Endpoint Biomarkers in Malignant and Nonmalignant Bladder Tissue Assessed by ImmunohistochemistryPCNA0.35 optical densityStandard Deviation 0.052
Arm III (1200mg Polyphenon E)Levels of Surrogate Intermediate Endpoint Biomarkers in Malignant and Nonmalignant Bladder Tissue Assessed by ImmunohistochemistryClusterin0.046 optical densityStandard Deviation 0.013
Arm III (1200mg Polyphenon E)Levels of Surrogate Intermediate Endpoint Biomarkers in Malignant and Nonmalignant Bladder Tissue Assessed by ImmunohistochemistryMMP20.16 optical densityStandard Deviation 0.069
Secondary

Metabolism of EGCG in Serum and Urine in Relation to Pharmacogenetic Polymorphisms in Catechol-O-Methyltransferase (COMT)

Time frame: At Baseline

Population: This outcome was assessed in all participants,combined irrespective of their randomization.~Analysis was not able to be completed on 4 participants.

ArmMeasureGroupValue (MEAN)Dispersion
Arm I (Placebo)Metabolism of EGCG in Serum and Urine in Relation to Pharmacogenetic Polymorphisms in Catechol-O-Methyltransferase (COMT)Plasma4.12 ng/mLStandard Deviation 4.8
Arm I (Placebo)Metabolism of EGCG in Serum and Urine in Relation to Pharmacogenetic Polymorphisms in Catechol-O-Methyltransferase (COMT)Serum0.00 ng/mLStandard Deviation 0
Arm II (800mg Polyphenon E, Placebo)Metabolism of EGCG in Serum and Urine in Relation to Pharmacogenetic Polymorphisms in Catechol-O-Methyltransferase (COMT)Plasma0.57 ng/mLStandard Deviation 1.89
Arm II (800mg Polyphenon E, Placebo)Metabolism of EGCG in Serum and Urine in Relation to Pharmacogenetic Polymorphisms in Catechol-O-Methyltransferase (COMT)Serum0.69 ng/mLStandard Deviation 1.82
Arm III (1200mg Polyphenon E)Metabolism of EGCG in Serum and Urine in Relation to Pharmacogenetic Polymorphisms in Catechol-O-Methyltransferase (COMT)Plasma2.48 ng/mLStandard Deviation 3.48
Arm III (1200mg Polyphenon E)Metabolism of EGCG in Serum and Urine in Relation to Pharmacogenetic Polymorphisms in Catechol-O-Methyltransferase (COMT)Serum0.43 ng/mLStandard Deviation 1.21
Secondary

Metabolism of EGCG in Serum and Urine in Relation to Pharmacogenetic Polymorphisms in Uridinediphosphate- Glucuronosyltransferase (UGT)

Time frame: At Baseline

Population: This outcome was assessed in all participants,combined irrespective of their randomization. Analysis was not able to be completed for 4 participants.

ArmMeasureGroupValue (MEAN)Dispersion
Arm I (Placebo)Metabolism of EGCG in Serum and Urine in Relation to Pharmacogenetic Polymorphisms in Uridinediphosphate- Glucuronosyltransferase (UGT)Plasma2.97 ng/mLStandard Deviation 4.2
Arm I (Placebo)Metabolism of EGCG in Serum and Urine in Relation to Pharmacogenetic Polymorphisms in Uridinediphosphate- Glucuronosyltransferase (UGT)Urine1.72 ng/mLStandard Deviation 2.43
Arm II (800mg Polyphenon E, Placebo)Metabolism of EGCG in Serum and Urine in Relation to Pharmacogenetic Polymorphisms in Uridinediphosphate- Glucuronosyltransferase (UGT)Urine0.86 ng/mLStandard Deviation 2.27
Arm II (800mg Polyphenon E, Placebo)Metabolism of EGCG in Serum and Urine in Relation to Pharmacogenetic Polymorphisms in Uridinediphosphate- Glucuronosyltransferase (UGT)Plasma2.09 ng/mLStandard Deviation 3.75
Arm III (1200mg Polyphenon E)Metabolism of EGCG in Serum and Urine in Relation to Pharmacogenetic Polymorphisms in Uridinediphosphate- Glucuronosyltransferase (UGT)Plasma2.02 ng/mLStandard Deviation 3.58
Arm III (1200mg Polyphenon E)Metabolism of EGCG in Serum and Urine in Relation to Pharmacogenetic Polymorphisms in Uridinediphosphate- Glucuronosyltransferase (UGT)Urine0.10 ng/mLStandard Deviation 0.4
7/7 GenotypeMetabolism of EGCG in Serum and Urine in Relation to Pharmacogenetic Polymorphisms in Uridinediphosphate- Glucuronosyltransferase (UGT)Plasma0.00 ng/mLStandard Deviation 0
7/7 GenotypeMetabolism of EGCG in Serum and Urine in Relation to Pharmacogenetic Polymorphisms in Uridinediphosphate- Glucuronosyltransferase (UGT)Urine0.00 ng/mLStandard Deviation 0
Secondary

Serum IGFBP-3 Levels Assessed by ELISA

Time frame: Baseline and up to 28 days

Population: Analysis was not able to be completed for 2 participants in Arm I.

ArmMeasureGroupValue (MEAN)Dispersion
Arm I (Placebo)Serum IGFBP-3 Levels Assessed by ELISABaseline1918.31 ng/mLStandard Deviation 607.16
Arm I (Placebo)Serum IGFBP-3 Levels Assessed by ELISAEnd of Study2020.31 ng/mLStandard Deviation 701.46
Arm II (800mg Polyphenon E, Placebo)Serum IGFBP-3 Levels Assessed by ELISABaseline1679.61 ng/mLStandard Deviation 556.59
Arm II (800mg Polyphenon E, Placebo)Serum IGFBP-3 Levels Assessed by ELISAEnd of Study1800.08 ng/mLStandard Deviation 490.92
Arm III (1200mg Polyphenon E)Serum IGFBP-3 Levels Assessed by ELISABaseline1824.86 ng/mLStandard Deviation 559.58
Arm III (1200mg Polyphenon E)Serum IGFBP-3 Levels Assessed by ELISAEnd of Study1624.03 ng/mLStandard Deviation 611.89
Secondary

Serum Insulin Growth Factor-1 (IGF-1) Levels Assessed by ELISA

Time frame: Baseline and up to day 28

Population: Analysis was not able to be completed for 2 participants in Arm I.

ArmMeasureGroupValue (MEAN)Dispersion
Arm I (Placebo)Serum Insulin Growth Factor-1 (IGF-1) Levels Assessed by ELISABaseline135.06 ng/mLStandard Deviation 22.64
Arm I (Placebo)Serum Insulin Growth Factor-1 (IGF-1) Levels Assessed by ELISAEnd of Study131.86 ng/mLStandard Deviation 15.59
Arm II (800mg Polyphenon E, Placebo)Serum Insulin Growth Factor-1 (IGF-1) Levels Assessed by ELISABaseline122.22 ng/mLStandard Deviation 37.49
Arm II (800mg Polyphenon E, Placebo)Serum Insulin Growth Factor-1 (IGF-1) Levels Assessed by ELISAEnd of Study124.22 ng/mLStandard Deviation 38.06
Arm III (1200mg Polyphenon E)Serum Insulin Growth Factor-1 (IGF-1) Levels Assessed by ELISABaseline132.12 ng/mLStandard Deviation 15.12
Arm III (1200mg Polyphenon E)Serum Insulin Growth Factor-1 (IGF-1) Levels Assessed by ELISAEnd of Study132.27 ng/mLStandard Deviation 27.77

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026