Because the array was manufactured, several new correlations of gene expression with drugs active in ovarian cancer have since been described, for example gemcitabine in which ribonucleotide reductase subunits may be involved (Smid et al, 2006), and paclitaxel in which YY1 expression has been implicated (Matsumura et al, 2009). This evidence concerns the gene YY1 and ovarian cancer.