Study of Olaparib (Lynparza™) Versus Enzalutamide or Abiraterone Acetate in Men With Metastatic Castration-Resistant Prostate Cancer (PROfound Study)
Purpose
The purpose of this study is to evaluate the efficacy and safety of olaparib versus enzalutamide or abiraterone acetate in subjects with metastatic castration-resistant prostate cancer who have failed prior treatment with a new hormonal agent and have homologous recombination repair gene mutations.
Condition
- Metastatic Castration-resistant Prostate Cancer
Eligibility
- Eligible Ages
- Between 18 Years and 130 Years
- Eligible Genders
- Male
- Accepts Healthy Volunteers
- No
Inclusion Criteria
- Histologically confirmed diagnosis of prostate cancer. 2. Documented evidence of metastatic castration resistant prostate cancer (mCRPC). 3. 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 . 4. Ongoing therapy with LHRH analog or bilateral orchiectomy. 5. Radiographic progression at study entry while on androgen deprivation therapy (or after bilateral orchiectomy). 6. Qualifying HRR mutation in tumor tissue.
Exclusion Criteria
- Any previous treatment with PARP inhibitor, including olaparib. 2. 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. 3. 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. 4. Subjects with known brain metastases.
Study Design
- Phase
- Phase 3
- Study Type
- Interventional
- Allocation
- Randomized
- Intervention Model
- Parallel Assignment
- Primary Purpose
- Treatment
- Masking
- None (Open Label)
Arm Groups
| Arm | Description | Assigned Intervention |
|---|---|---|
|
Experimental Olaparib |
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 |
|
|
Active Comparator Enzalutamide OR abiraterone acetate |
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. |
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More Details
- Status
- Completed
- Sponsor
- AstraZeneca
Study Contact
Detailed Description
This is a prospective, multicenter, randomized, open-label, phase 3 trial evaluating the efficacy and safety of olaparib versus enzalutamide or abiraterone in subjects with metastatic castration-resistant prostate cancer (mCRPC) who have failed prior treatment with a new hormonal agent (NHA) and have a qualifying tumor mutation in one of 15 genes involved in the homologous recombination repair (HRR) pathway. Subjects will be divided into two cohorts based on HRR gene mutation status. Approximately 340 subjects will be randomized 2:1 (olaparib : investigator choice of enzalutamide or abiraterone acetate) into the trial.