Methylated epigallocatechin, gallocatechin, and dihydromyricetin derivatives (compounds 23, 35, and 36) were not cytotoxic (>100 μM) for LCC6, LCC6MDR (a P-gp overexpressing breast cancer cell line) and L929 fibroblast cell lines [56]. The gene discussed is PGP; the disease is breast cancer.