The presence of TAG72 has been confirmed on MUC1 and CD44 [376] (an ovarian cancer stem cell marker and receptor for the ECM molecule hylauronan [377]) as well as CD133 (a marker present in cancer stem-cells including ovarian cancer) [378] and MUC16 proteins [379] in ovarian cancer patients. The gene discussed is MMRN1; the disease is ovarian cancer.