Green tea extract appears to keep cancer in check in majority of CLL patients

An extract of green tea appears to have clinical activity with low toxicity in chronic lymphocytic leukemia (CLL) patients who used it in a phase II clinical trial, say researchers at Mayo Clinic. The findings, presented Monday, June 7, during the annual meeting of the American Society of Clinical Oncology ( (ASCO), are the latest in a series of Mayo studies to show promise for use of the chemical epigallocatechin gallate (EGCG) — the major component of green tea — in reducing the number of leukemia cells in patients with CLL.

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