Depletion of CD20 positive cells via OFT appears to indirectly prevent demyelination by modulating microglial polarization. This is linked to reduced serum cytokines and absence of serum-inherent TLR4 ligands post-treatment, suggesting a potential peripheral immunomodulation-mediated protective mechanism impacting CNS immune responses. These findings underscore the need to investigate how therapies targeting peripheral immune cells can also influence CNS immune mechanisms.