28 January 2016 - AstraZeneca today announced that the US FDA has granted breakthrough therapy designation for the oral poly ADP-ribose polymerase inhibitor Lynparza (olaparib), for the monotherapy treatment of BRCA1/2 or ATM gene mutated metastatic castration resistant prostate cancer in patients who have received a prior taxane-based chemotherapy and at least one newer hormonal agent (abiraterone or enzalutamide).