PRONUNCIATION sar il’ ue mab
THERAPEUTIC CLAIM Treatment of rheumatoid arthritis and
1. Immunoglobulin G1, anti-(human interleukin 6 receptor α) (human REGN88 heavy
chain), disulfide with human REGN88 light chain, dimer
2. Immunoglobulin G1, anti-(human interleukin-6 receptor subunit alpha (IL-6RA,
membrane glycoprotein 80, CD126)); human monoclonal RGN88 γ1 heavy chain (219-
214′)-disulfide with human monoclonal RGN88 κ light chain dimer (225-225”:228-
MOLECULAR FORMULA C6388H9918N1718O1998S44
MOLECULAR WEIGHT 144.13 kDa
SPONSOR Regeneron Pharmaceuticals, Inc.
CODE DESIGNATION REGN88, SAR153191
CAS REGISTRY NUMBER 1189541-98-7
Sarilumab (REGN88/SAR153191) is a fully-human monoclonal antibody directed against the IL-6 receptor (IL-6R). Sarilumab is a subcutaneously delivered inhibitor of IL-6 signaling, which binds with high affinity to the IL-6 receptor. It blocks the binding of IL-6 to its receptor and interrupts the resultant cytokine-mediated inflammatory signaling.
Sanofi and Regeneron’s investigational rheumatoid arthritis drug sarilumab has succeeded in a late-stage trial.
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