Based on synonyms in MeSH and EMTREE databases and assuming hyphenated terms will retrieve hyphenated terms as well as those with spaces.
IL-1-receptor-antagonist OR Anakinra OR Antril OR IL1-Febrile-Inhibitor OR IL1-Inhibitor OR IL-1Ra OR Interleukin-1-Inhibitor OR Kineret OR interleukin-1-receptor-blocker OR interleukin-1-receptor-blocking OR 143090-92-0
