<prompt> Which of the following drugs is useful for treatment of advanced prostate cancer?GanirelixCetrorelixAbarelixGoserelin  <response>: Drugs used in advanced prostate cancer are : LHRH agonists medical castration - leuprolide, goserelin Phosphorylated diethylstilbestrol Androgen receptor blocking agents like flutamide, bicalutamide Cyproterone acetate also has progestogenic effect Ganirelix, cetrorelix and abarelix are GnRH antagonists Reference : page 1050 SRBs manual of surgery 5th edition 