ROMO1 and rheumatoid arthritis: Importantly, ROMO1 correlations maintained consistent signs within different tissue types of the same disease: for T1D, -0.43 in whole blood and − 0.42 in PBMCs; for RA, 0.20 in whole blood and 0.64 in PBMCs; and for MS, 0.41 in whole blood and 0.24 in white matter.