Prevalence of HRR-related Genes Mutations and Prognosis in Metastatic Castration Resistant Prostate Cancer (mCRPC) Patients in Real World Setting

Inclusion Criteria

• •Age \> 20, Japanese men at the time of informed consent.
• •Patients who provided informed consent. If the patient has died, opt-out will be applicable.
• •Patients who are diagnosed as mCRPC between January 1st in 2014 and December 31st in 2018.
• •Patients who have a FFPE tumor sample (primary or metastatic) with Formalin Neutral Buffer Solution.
• •Patients which the investigator judges to secure the enough amount of tumor samples for future laboratory test.