Olaparib for Patients With Recurrent BRCA Deficient Ovarian Cancer

Olaparib tablets will be taken twice daily, orally, in treatment cycles lasting 4 weeks. On days 1, 8, 12 and 22 of the first 2 cycles and day 1 of all other cycles, subjects will have a physical exam, be asked questions about their general health, and specific questions about any problems they might be having and any medications they are taking. Tumor will be assess by either CT or MRI scan every 2 cycles (every 2 months). Tumor biopsies will be optional in this study. Only participants that have received a PARP inhibitor in the past will be asked to have a biopsy of their tumor.