[Poly(ADP-ribose) polymerase (PARP-)inhibitors as genetically based precision therapy in metastatic castration-resistent prostate cancer (mCRPC)].

With PARP inhibitors, the therapeutic landscape for metastatic castration-resistant prostate cancer (mCRPC) has been expanded by a new substance class since November 2020. Currently, the indication for this innovative therapy requires the presence of a mutation in one of the BRCA1/2 genes and prior hormonal therapy. This short review explains the molecular background and summarizes current clinical trials on PARP inhibition-also in combination with other therapy strategies. In view of positive data from the cited studies and the relatively high proportion of patients with "actionable" mutations, the personalized therapy concept of BRCA1/2 mutation-dependent PARP inhibition for mCRPC is now reflected in various guidelines including S3 guidelines.