AGR2 and ovarian neoplasm: All ovarian tumour types analysed exhibited elevated the median circulating levels of AGR2 (750 pg/mL vs. 200 pg/mL), and both serous and non-serous cases of all stages presented significantly increased the median circulating levels of AGR2 (875 pg/mL in serous tumours, vs. 680 pg/mL in non-serous).