03/02/2026 Relay Therapeutics' zovegalisib + fulvestrant received the FDA breakthrough therapy designation for breast cancer The US FDA granted priority review status to Datroway for the treatment of TNBC Relay Therapeutics' zovegalisib + fulvestrant received the FDA breakthrough therapy designation for breast cancer ( Ref ) The US FDA granted the breakthrough therapy designation to Relay Therapeutics' zovegalisib (PI3Kα inhibitor) + fulvestrant for the treatment of adults wi