PROceed is a multisite, prospective, observational study that describes the real-world use and clinical experience of mCRPC patients treated with the combination of olaparib and abiraterone in the mCRPC setting. Clinical outcomes will be assessed in patients who are either NHA-naive or NHA-exposed prior to initiating olaparib + abiraterone treatment, respectively. Patient demographic and clinical characteristics, as well as treatment received prior and subsequent to olaparib + abiraterone, will also be described. The study plans to enroll patients for a maximum of 2 years and follow up patients from initiation of olaparib until 1 year post last patient in.

Inclusion Criteria:

• Willing and able to provide written informed consent;
• 18 years of age and above;
• Documented histopathology or cytopathology of PCa, adenocarcinoma;
• Confirmed as mCRPC;
• Initiated olaparib + abiraterone after site activation

Exclusion Criteria:

• Patients participating in a clinical trial with an investigational prostate cancer treatment within 30 days prior to olaparib initiation

The study population will consist of patients with a confirmed mCRPC diagnosis that has initiated the combination of olaparib and abiraterone through routine clinical practice at participating sites in Germany.

Qualified researchers can request access to anonymized individual patient-level data from AstraZeneca group of companies sponsored clinical trials via the request portal

Vivli.org. All requests will be evaluated as per the AZ disclosure commitment:

https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure.

"Yes", indicates that AZ are accepting requests for IPD, but this does not mean all requests will be approved.

AstraZeneca will meet or exceed data availability as per the commitments made to the EFPIA/PhRMA Data-Sharing Principles. For details of our timelines, please refer to our disclosure commitment at https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure.

When a request has been approved AstraZeneca will provide access to the anonymized individual patient-level data via secure research environment Vivli.org. A Signed Data Usage Agreement (non-negotiable contract for data accessors) must be in place before accessing requested information.