Anti-CD20 B cell depletion is associated with elevated mucosal-originating circulating regulatory IgA B cells in multiple sclerosis.
It is found that anti-CD20 B cell depletion was associated with increased frequencies of regulatory mucosal-derived IgA-producing B cells in the periphery and CSF, together with increased B cell receptor clonal overlap between mucosal and systemic compartments, indicating enhanced trafficking of IgA B cells from gut mu...