Anti-cancer activity of quercetin such as induction of apoptosis [183], fatty acid synthase (FAS) [184], inhibition of cell proliferation [185, 186], reduction of metalloproteinase-2 (MMP-2), and metalloproteinase-9 (MMP-9) expression [187] in prostate cancer cells were studied. Here, MMP2 is linked to Familial prostate cancer.