The objective of the study was to evaluate if the Cx43 hemichannel blocker, tonabersat, is effective in modulating the inflammatory response and reducing disability in the myelin oligodendrocyte glycoprotein 35–55-induced experimental autoimmune encephalomyelitis (MOG35–55 EAE) model of MS. The gene discussed is MOG; the disease is experimental autoimmune encephalomyelitis.