Immunostainings were positive for AE1/AE3, CK7, PAX-8, p16, WT-1, and p53 and negative for CK20, thus being consistent with the metastasis of right fallopian tubal high-grade serous carcinoma (Fig. 4) (pelvic lymph node 0/20, para-aortic lymph node 1/17). The gene discussed is PAX8; the disease is serous adenocarcinoma.