A number of markers expressed on ovarian cancer stem cells have been described in the literature: CD133 (prominin), ALDH (aldehyde dehydrogenase), CD44 (hyaluronan), CD117 (c-kit), MyD88 (myeloid differentiation primary response protein), CD24 (mucin-like adhesion molecule) [33]. The gene discussed is MYD88; the disease is ovarian cancer.