This is a retrospective and prospective, multicenter, observational, two-cohorts study aimed to evaluate clinical outcomes and safety of patients diagnosed with advanced high grade ovarian cancer whose tumor was tested for the homologous recombination (HR) status using a validated HR deficiency test between January 2021 and January 2026.
* Cohort A: Homologous Recombination Deficient (HRD) ovarian cancer patients treated with Olaparib plus Bevacizumab as maintenance therapies after partial or complete response to first line platinum-based chemotherapy.
* Cohort B: Homologous Recombination Proficient (HRP) ovarian cancer patients treated as for standard clinical practice at clinician's choice.