MUC2 and mucinous ovarian cancer: The rate of MUC2 overexpression was 58.8% (10/17, see Table 1) in the mucinous ovarian cancer cases, which was significantly higher than the rates of 14.9% (10/67), 12.5% (1/8), 40% (2/5) and 0% (0/2) in the serous, endometrioid, clear cell and undifferentiated cancer cases, respectively (Table 1).