Eight polymorphisms (MMP2 C-735T, MMP7 A-181G, MMP8 rs11225395, MMP9 rs6094237, MMP12 rs2276109, MMP20 rs2292730, MMP20 rs12278250, MMP20 rs9787933) were reported associated with ovarian cancer risk, while other polymorphisms could not be associated with ovarian cancer risk. This evidence concerns the gene MMP9 and ovarian cancer.