“The tea polyphenol (-)-epigallocatechin-3-gallate (EGCG) has been reported to act as a cancer preventive agent through folate pathway inhibition in experimental studies.”
“We hypothesized that if folate pathway inhibition is the mechanism of cancer preventive activities of EGCG , then the protective effect against breast cancer would be stronger among women with low dietary folate intake and the high-activity methylenetetrahydrofolate reductase (MTHFR) and thymidylate synthase (TYMS) genotypes.”