Secondary Interval Cytoreductive Surgery in Platinum-sensitive Recurrent Epithelial Ovarian Cancer

Inclusion Criteria: * Histologically diagnosed EOC, fallopian tube or primary peritoneal carcinoma * \>= 3 cycles of platinum-based chemotherapy, with or without bevacizumab and / or PARPi, at primary setting * Platinum-free interval should be \>=6 months from the last dose of platinum-based chemotherapy * Upfront SCR not feasible * Patients should have Eastern Cooperative Oncology Group (ECOG) performance score 0 to 2 within 28 days prior to recruitment. * Patients must have adequate bone marrow, renal, hepatic and neurological function within 28 days prior to the start of treatment. Exclusion Criteria: * Non-epithelial or borderline tumors are excluded * Patients who have with concurrent malignancy within five years (except for basal or squamous cell skin cancer, in-situ breast cancer, stage 1a grade 1-2 endometrioid endometrial carcinoma without lymphovascular invasion) are excluded. * Patients using more than one line of chemotherapy are excluded. * Patients who have platinum-resistant or refractory recurrence are excluded. * Patients having second relapse or beyond are excluded. * Patients who have contraindications to operation, e.g., unresolved thrombocytopenia, bowel obstruction in the last 4 weeks prior to enrolment