Bortezomib and Pegylated Liposomal Doxorubicin in BRCA Wild-type Platinum-resistant Recurrent Ovarian Cancer Patients

Inclusion Criteria: * Patients diagnosed with epithelial ovarian cancer, fallopian tube cancer, or peritoneal cancer based on histologic findings obtained from biopsy/surgery and having a histologic type of high-grade serous cancer. * In the absence of a mutation of the BRCA gene (no germline mutation should be identified, not in the case of a somatic mutation) * Recurrence within 6 months after platinum-based chemotherapy. * ECOG performance 2 points or less. * Blood tests performed within 2 weeks of enrollment meet the following results: Neutrophil \> 1,500/mm3; Platelet \> 100,000/mm3; Hemoglobin \> 9.0 g/dL; Total bilirubin \< 1.5 x upper limit of normal (ULN); AST/ALT \< 3.0 x ULN (or \< 5 x ULM in case of liver metastases); Creatinine \< 1.5 x ULN; Electrolytes should be within normal limits. * Patients who understand the content of the study description and voluntarily agree in writing. * Patients who are willing and able to adhere to the visit schedule, treatment plan, laboratory tests, and other testing procedures. Exclusion Criteria: * Patients previously treated with three or more anticancer regimens. Maintenance therapy is not considered a separate regimen (eg\> paclitaxel-carboplatin-bevacizumab therapy). In the combined chemotherapy, when one drug is subtracted due to toxicity, the regimen is not counted as a change (Eg\> paclitaxel-carboplatin chemotherapy, paclitaxel was discontinued due to neurotoxicity and carboplatin alone was not considered as a change of regimen). * Previous refractory to ovarian cancer chemotherapy. * Patients diagnosed with other tumors other than ovarian cancer for the last 5 years (not CIS). * pregnant woman. * Patients with uncontrolled infection. * In the case of congenital immune disease or acquired immune deficiency syndrome. * Women in lactation. * History with Grade 3 or higher peripheral neuropathy. * History of hypersensitivity reactions to PLD or bortezomib. * If the physician is judged to have any serious illness or medical condition for which the patient is not suitable for the study. * Patients with confirmed BRCA somatic mutations. * Patients with acute diffuse infiltrative lung disease and cardiovascular disease.