“…There are multiple TKIs under development and in various stages of investigation including nilotinib [92][93][94], sorafenib [95][96][97], masitinib [98,99], regorafenib [100], dasatinib [101,102], and vatalanib [103]. Crenolanib is a novel PDGFR kinase inhibitor undergoing evaluation in GIST patients whose tumors carry a PDGFRA D842V mutation to most other kinases available [104].…”