Tissue will be received from operative specimens( primary ovarian carcinoma) at time of primary cytoreductive surgery.Ovarian cancer(OC) organoids will be then cultured. Organoids will be validated with a combination of Next Generation Sequencing (NGS) analysis and immunohistochemistry (TP53, PAX8 etc). After then, the patient-derived organoids cultured from OC will be compared the sensitivity to standard regimens (chemotherapies and targeted agents) recommendated by NCCN guidlines versus patients treated in clinical practice.