“…Methylation levels of cg23700278, cg27427581, cg04334751, cg26764200 are found increased significantly after MTX treatment (Nair et al, 2019). In addition, DNA methylation of LBH, CASP8, OLIG3, IRF5, HLA-G, ELMO1, TRHDE, SLCO1C1, PLD4, AIRE and HLA-DQA1 are demonstrated involved in pathogenesis of RA and then are recommended as promising therapeutic markers (Fan et al, 2016). AZU1, LTBR, RTEL1 are hypomethylated and related to the trigger of autoimmune signaling cascade indicating the potential roles as epigenetic susceptibility markers (Wang et al, 2018).…”