Green Tea Extract in Treating Patients With Monoclonal Gammopathy of Undetermined Significance and/or Smoldering Multiple Myeloma

Study Overview
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Brief Summary
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RATIONALE: Green tea extract contains ingredients that may prevent or slow the growth of monoclonal gammopathy of undetermined significance and/or smoldering multiple myeloma. PURPOSE: This phase II trial is studying how well green tea extract works in treating patients with monoclonal gammopathy of undetermined significance and/or smoldering multiple myeloma.

Detailed Description
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OBJECTIVES: Primary Conduct a pilot study investigating the effects of Polyphenon E, a compound extracted from green tea which contains epigallocatechin-3-gallate (EGCG), on monoclonal protein levels in patients with monoclonal gammopathy of undetermined significance and/or smoldering multiple myeloma. Secondary Collect, process, and store blood and marrow specimens for future measurement of the biologic effects of Polyphenon E on the plasma cells of these patients by utilizing proteosome activity assays and gene expression profiling. OUTLINE: Patients receive oral green tea catechin extract (Polyphenon E) daily on days 1-28. Treatment repeats every 28 days for up to 6 courses in the absence of disease progression or unacceptable toxicity. Patients may undergo blood, urine, and bone marrow sample collection periodically for correlative laboratory studies. Samples are analyzed for monoclonal protein (M-protein) levels, proteosome function, and gene expression.

Official Title
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The Clinical and Biologic Evaluation of Polyphenon E, an Extract of Green Tea Containing EGCG, in Plasma Cell Dyscrasias - Pilot Study

Conditions
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Multiple Myeloma and Plasma Cell Neoplasm, Precancerous Condition

Intervention / Treatment
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* Dietary Supplement: defined green tea catechin extract
* Genetic: gene expression analysis
* Genetic: protein analysis
* Other: laboratory biomarker analysis


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Measurable monoclonal protein in the serum (for immunoglobin [Ig]G or IgM, >= 1.0 g/dL using serum protein electrophoresis [SPEP]/immunofixation electrophoresis [IFE]; for IgA, an SPEP/IFE confirming the presence of a monoclonal IgA band plus a quantitative IgA level of >= 750 mg/dL) OR measurable urine Bence Jones paraprotein (>= 500mg/24hrs) OR a measurable serum free light chain (FLC), defined as an involved FLC level of >10 mg/dl, and a serum FLC ratio that is abnormal Neutrophil count >= 1,500 Platelet count >= 100,000 Hemoglobin >= 9mg/dL Alanine aminotransferase (ALT) =< institutional upper limit of normal (IULN) Aspartate aminotransferase (AST) =< IULN Total bilirubin =< IULN Alkaline phosphatase =< IULN Any ethnic group Prior therapy is allowed if >= 4 weeks prior to registration Life expectancy of at least 6 months Ability to understand and the willingness to sign a written informed consent document Willingness to comply with oral home treatment and visit schedule Patients with reproductive capacity must be willing to use adequate contraception (barrier contraception, birth control pills, or other highly effective hormonal agents) or abstain from sexual activity for the duration of the study and 30 days beyond the end of therapy Exclusion Criteria: Pregnant women Breastfeeding women Confirmed symptomatic multiple myeloma (MM), defined by any of the following: Lytic lesions on skeletal survey Anemia attributable to plasma cell infiltrate in marrow Hypercalcemia Renal dysfunction not attributable to other causes Uncontrolled intercurrent illness, including but not limited to active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, psychiatric illness or social situations that would compromise compliance with study medication or follow up visits Patients with high predisposition to gastrointestinal bleeding, such as known gastroesophageal varices or active peptic ulcer disease Patients with chronic liver disease (such as hepatitis B, hepatitis C, or alcoholic cirrhosis) Prior daily ingestion of green tea or green tea extract within 6 months of study entry Patients who have previously experienced any adverse symptoms related to green tea or any of the inactive components present in Polyphenon E capsules Concurrent use of investigational or commercial agent or therapy with the intent to treat MGUS and/or SMM

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: defined green tea catechin extract / correlative analysis<br>Polyphenon E, an oral capsule form of EGCG extracted from green tea, 800 mg administered daily on an empty stomach (at least 1 hour before or 2 hrs after a meal)Patients receive oral green tea catechin extract (Polyphenon E) daily on days 1-28. Treatment repeats every 28 days for up to 6 courses in the absence of disease progression or unacceptable toxicity. | Dietary Supplement: defined green tea catechin extract<br>* Polyphenon E, an oral capsule form of EGCG extracted from green tea, 800 mg administered daily on an empty stomach (at least 1 hour before or 2 hrs after a meal)Patients receive oral green tea catechin extract (Polyphenon E) daily on days 1-28. Treatment repeats every 28 days for up to 6 courses in the absence of disease progression or unacceptable toxicity.<br>Genetic: gene expression analysis<br>* Blood and bone marrow samples will be obtained prior to the start of treatment and at the conclusion of the study for correlative studies. An additional peripheral blood sample will be obtained on day 8 of the first cycle of therapy.<br>Genetic: protein analysis<br>* Blood and bone marrow samples will be obtained prior to the start of treatment and at the conclusion of the study for correlative studies. An additional peripheral blood sample will be obtained on day 8 of the first cycle of therapy.<br>Other: laboratory biomarker analysis<br>* Blood and bone marrow samples will be obtained prior to the start of treatment and at the conclusion of the study for correlative studies. An additional peripheral blood sample will be obtained on day 8 of the first cycle of therapy.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Sustained M-protein Reduction of ≥ 25% From Baseline | This is a monthly blood test, done at the beginning of each cycle of therapy. The M-protein is a surrogate marker routinely used to estimate the degree of plasma cell cyto-reduction brought about by therapy. In active multiple myeloma, a 25% reduction in the M-protein level would correspond to a minor response, an improvement recognized as having some clinical benefit. | Day one of each 28-day cycle for a total of up to 6 cycles | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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monoclonal gammopathy of undetermined significance, smoldering multiple myeloma