PGLYRP1 and systemic lupus erythematosus: In serum samples from SLE patients, it has been reported overexpression of Pglyrp1[37], a member of the family of bacterial peptidoglycan sensor molecules, and also it was associated with other autoimmune diseases like rheumatoid arthritis [38] Besides, SLE severity is associated with Olr1 [4, 39].