Study of Olaparib (Lynparza™) Versus Enzalutamide or Abiraterone Acetate in Men With Metastatic Castration-Resistant Prostate Cancer (PROfound Study)
Metastatic Castration-resistant Prostate Cancer

About this trial
This is an interventional treatment trial for Metastatic Castration-resistant Prostate Cancer focused on measuring metastatic castration-resistant prostate cancer (mCRPC), homologous recombination repair (HRR)
Eligibility Criteria
Inclusion criteria
- Histologically confirmed diagnosis of prostate cancer.
- Documented evidence of metastatic castration resistant prostate cancer (mCRPC).
- Subjects must have progressed on prior new hormonal agent (e.g. abiraterone acetate and/or enzalutamide) for the treatment of metastatic prostate cancer and/or CRPC .
- Ongoing therapy with LHRH analog or bilateral orchiectomy.
- Radiographic progression at study entry while on androgen deprivation therapy (or after bilateral orchiectomy).
- Qualifying HRR mutation in tumor tissue.
Exclusion criteria
- Any previous treatment with PARP inhibitor, including olaparib.
- Subjects who have any previous treatment with DNA-damaging cytotoxic chemotherapy, except if for non-prostate cancer indication and last dose > 5 years prior to randomization.
- Other malignancy (including MDS and MGUS) within the last 5 years except: adequately treated non-melanoma skin cancer or other solid tumors curatively treated with no evidence of disease for ≥5 years.
- Subjects with known brain metastases.
Sites / Locations
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Arms of the Study
Arm 1
Arm 2
Experimental
Active Comparator
Olaparib
Enzalutamide OR abiraterone acetate
Olaparib is available as a film-coated tablet containing 150 mg or 100 mg of olaparib. Subjects will be administered study treatment orally at a dose of 300 mg twice daily (bid). The planned dose of 300 mg bid will be made up of two x 150 mg tablets twice daily, with 100 mg tablets used to manage dose reductions
Enzalutamide: Enzalutamide is available as capsules or tablets containing 40 mg of enzalutamide. Subjects will be administered study treatment orally at a dose of 160 mg once daily. Abiraterone acetate with prednisone: Abiraterone acetate is available as tablets containing 250 mg or 500 mg of abiraterone acetate. Subjects will be administered study treatment orally at a dose of 1,000 mg once daily in combination with prednisone 5 mg administered twice daily orally. Prednisolone is permitted for use instead of prednisone if necessary.