WFDC2 and ovarian cancer: Some of the terms include the following: “human epididymis protein 4,” “HE-4,” “human epididymis 4,” “human epididymis secretory protein 4,” “HE4 protein,” “cancer antigen 125,” “CA-125,” “carbohydrate antigen 125,” “ovarian cancer,” “ovarian carcinoma,” “ovarian tumour,” “ovarian tumour,” and “ovarian neoplasm.”