Green tea extract promotes immune system function in older AML patients

Key clinical point: Green tea extract was safely tolerated and associated with improved immune modulation regardless of tumor burden in older acute myeloid leukemia patients on low-dose chemotherapy.

Major finding: After 30 days, older adults with acute myeloid leukemia who consumed green tea extract showed an increase in total and CD8⁺ T cells, perforin⁺/granzyme B⁺ natural killer cells, monocytes, and classical monocytes. 

Study details: The data come from 10 patients aged 60 years and older with acute myeloid leukemia with myelodysplasia-related changes (AML-MRC) who received two capsules of green tea extract for a 1,000-mg daily dose for at least 6 months.

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Disclosures: The study was supported by Conselho Nacional de Desenvolvimento Científico e Tecnológico, the Fundação de Amparo à Pesquisa do Estado de São Paulo, and the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior. The researchers had no financial conflicts to disclose. 

Source: Calgarotto AK et al. Integr Cancer Ther. 2021 Mar 23. doi:10.1177/15347354211002647.