HLA-DRB1 and rheumatoid arthritis: When considering HLA-DRB1 alleles predisposing to the development of recurrent herpes lymphocytic meningitis and CMV reactivation, results were more contrasted with the characterization of both RA-associated non share epitopes HLA-DRB1∗09 and DRB1∗15, and RA-associated share epitopes HLA-DRB1∗01/∗04 (Du et al., 2007; Kekik et al., 2009; Kallio-Laine et al., 2010; Acar et al., 2014).