ROMO1 exhibited varying associations with monocytes across the three autoimmune diseases (RA, Cor = 0.20, P = 0.037; MS, Cor = 0.41, P = 3.51 × 10− 3; T1D, Cor=-0.43, P = 3.93 × 10− 3). This evidence concerns the gene ROMO1 and rheumatoid arthritis.