SOAT1 and toxoplasmosis: In the current study, KEGG analysis of differentially expressed proteins in serum and CSF was performed to obtain several genetic pathways related to MS, and the previous four genetic pathways were verified to be related to MS: Toxoplasmosis, chemokine signaling pathway, focal adhesion, acute myeloid leukemia, JAK-STAT signaling pathway, protein processing in endoplasmic reticulum.