IL10 and relapsing-remitting multiple sclerosis: Relapsing–remitting multiple sclerosis (RRMS) patients showed a lower prevalence of both Prevotella [158, 159] and Clostridium which is linked to Th17 cell expansion and enhances the production of IL-10 (the anti-inflammatory cytokine) and Treg cells in peripheral compartments respectively [160, 161].