FCRL3 and systemic lupus erythematosus: Recently, polymorphisms of FCRL3 have been reported to be associated with rheumatoid arthritis (RA), systemic lupus erythematosus (SLE) [22], Behcet’s disease [23], autoimmune thyroid disease (AITD) [22, 24], and multiple sclerosis (MS) [25, 26].