APC, CDH13, CRABP1, HOXA9, HOXB5, RASSF1A, and SCGB3A1 were found to be hypermethylated both in the primary tumours and in ovarian cancer cell lines, whereas ADAMTS1 and MGMT were hypermethylated only among cell lines. This evidence concerns the gene HOXB5 and ovarian cancer.