Although Dong et al. stated that MUC2 molecules were more frequently expressed in low-grade mucinous ovarian cancer samples [46], our study showed only a trend that MUC2 was overexpressed in G2 cases (16% for G1, 34% for G2, and 20% for G3, p=0.182, χ2 test, Table 1). The gene discussed is MUC2; the disease is mucinous ovarian cancer.