- Subject has received any anti-cancer therapy including chemotherapy, immunotherapy, biologic or any investigational therapy within either 28 days or 5 half-lives of a targeted therapy (whichever is shorter), prior to study drug administration; subjects receiving hormone therapy, bisphosphonates, denosumab or luteinizing-hormone-releasing hormone (LHRH)-agonists are eligible; subjects who have not recovered to within one grade level (not to exceed grade 2) of their baseline following a significant adverse event or toxicity attributed to prior anti-cancer treatment are excluded