Following the publication of the above paper, it was drawn to the Editor's attention by a concerned reader that a section of the western blot image for β‐actin in Fig. 1B on p. 157 had also been used for the control β‐actin blots in Fig. 3C on p. 159, despite these data having come from different sources (Fig. 1: CD133<sup>‐</sup> ovarian cancer cells compared with Fig. 3: CD133<sup>+</sup> ovarian cancer stem cells infected with recombinant adenovirus). This evidence concerns the gene PROM1 and ovarian cancer.