B. thetaiotaomicron has been previously found in patients with SLE (28) and expressed human-anti Ro60 antibodies in the blood of patients with SLE (38), which is implicated via molecular mimic of Ebstein–Barr virus nuclear antigen-1 in the intuition of SLE humoral auto-immunity. Here, RO60 is linked to systemic lupus erythematosus.