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Metastatic Castration-Resistant Prostate Cancer (mCRPC)
                            Testosterone ≤1.7 nmol/L AND metastasis detected with conventional imaging (with or without PSA progression)


                                                      • Conduct staging and prognostic assessment
                                                      • Assess for HRR gene mutations (BRCA1/2 or ATM)
                                                      • Consider multidisciplinary consult and clinical trial participation


                                                                       Continue ADT [L3sr]



                         Poor Prognosis                                                         Moderate/Good Prognosis
          •  See Halabi (JClinOncol. 2014) criteria for prognostic    •  Choice of therapy should generally exclude agents and drug classes received in the past
             stratification                                    •   Optimal treatment sequence remains unknown
          •   Widespread visceral metastasis, rapid progression
             of clinical symptoms, poor response to ADT, radiological
                                                                                           st
             progression without significant PSA elevation                         mCRPC 1 -Line (preference for agents not received in the past)
                                                                Asymptomatic/ Minimally       Moderate or Severe Symptoms            HRR Mutation
                                                                     Symptomatic                   Docetaxel [L1SR] OR          Olaparib (if prior ARAT) OR
          •  Refer for multidisciplinary consult, monitoring and    Abiraterone + Pred.  [L1SR] OR   Abiraterone + Pred.  [EO] OR     Clinical trial
                                                                              a
                                                                                                              a,d
             treatment                                            Enzalutamide [L1SR] OR          Enzalutamide  [EO] OR               OTHERWISE
                                                                                                            d
                                                                   Docetaxel [L1SR]  OR               Clinical trial               Non-HRR-targeted
                                                                               b
                                                                      Clinical trial                                                mCRPC options
           No response to 1 -line ADT or Clinical/Radiological
                        st
            Progression Without Significant PSA Elevations
                                                                                          Clinical, radiological, or PSA progression e,f
          •  Consider neuroendocrine differentiation; biopsy
             accessible lesions
                                                                                   mCRPC 2 -Line (preference for agents not received in the past)
                                                                                          nd
                                                                      Post-ARAT                     Post-Docetaxel                   HRR Mutation
                   Neuroendocrine Differentiation                     Docetaxel OR             Abiraterone + Pred.  [L1SR] OR   Olaparib (if prior ARAT) [L1SR] OR
                                                                                                              a
          •  Combination chemotherapy (eg, cisplatin-etoposide    Radium-223 (if symptomatic and    Enzalutamide [L1SR] (if neither   Clinical trial
            OR carboplatin-etoposide) [L3WR]                   no visceral metastases)  [L1SR]    received previously) OR             OTHERWISE
                                                                                 c
                                                                          OR                 Radium-223 (if symptomatic and no     Non-HRR-targeted
                                                                                                              c
                                                                      Clinical trial           visceral metastases)  [L1SR] OR      mCRPC options
        mCRPC                                                                                     Cabazitaxel [L1SR] OR
        a. Abiraterone 1000 mg/day plus prednisone 5 mg BID.                                          Clinical trial
        b. The timing of docetaxel therapy in men without symptoms should be discussed
          with patients, and therapy should be individualized based on the patient’s clinical
          status and preference.                                                          Clinical, radiological, or PSA progression e,f
        c.  Radium-223 is recommended in patients with pain due to bone metastases and
          who do not have visceral metastases. Radium 223 significantly improved overall
          survival and reduced symptomatic SREs in patients who previously received    mCRPC 3 -Line (preference for agents not received in the past)
                                                                                          rd
          docetaxel or were deemed unfit for docetaxel.
        d. The clinical trials of abiraterone acetate and enzalutamide in the chemo-naïve    Cabazitaxel (post-docetaxel) [L1SR] OR
          setting did not include patients with moderate or severe symptoms, however    Radium-223 (if symptomatic and no visceral metastases)[L1SR] OR
          these therapies may be considered in patients who refuse or are deemed
          unsuitable for chemotherapy.                                                               Clinical trial OR
        e. PSA progression as defined by PCWG2 criteria (PSA increase that is ≥25% and    Olaparib (if HRRm and prior ARAT) [L1SR] OR
          ≥2 ng/mL above the nadir, and which is confirmed by a second value 3 or more    Docetaxel re-exposure (unknown survival benefit) [EO] OR
          weeks later).                                                                   Mitoxantrone (unknown survival benefit) [EO]
        f.  Consider palliative options.
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