MIR150 and rheumatoid arthritis: MIR-150 is upregulated or downregulated in many autoimmune diseases, such as multiple sclerosis (MS) (100), myasthenia gravis (MG) (101–103), systemic lupus erythematosus (SLE) (104–106), rheumatoid arthritis (RA) (107–109), and primary Sjogren’s syndrome (pSS) (110).