WFDC2 and neoplasm: For this patient, the levels of tumor markers, such as carbohydrate antigen (CA-125), human chorionic gonadotropin (HCG), alpha-fetoprotein (AFP), carcinoembryonic antigen (CEA), carbohydrate antigen 19 − 9 (CA19-9) and human epididymal protein-4 (HE4) were all within normal limits.