Epigallocatechin-gallate is the most abundant phytochemical of green tea. It has been described as reducing tumor growth in PCa, among other mechanisms such as induction of proapoptotic pathways, decreased inflammation through NF-kB, antioxidant properties. Its consumption could be associated with a lower incidence of PCa and a lower progression of precancerous lesions in dose-dependent form. The gene discussed is NFKB1; the disease is posterior cortical atrophy.