When the active RA subgroups were stratified by DAS28, most proteins exhibited the same serum inflammatory pattern associated with a high cumulative GC dose as in case of subgroups based on SDAI (p < 0.05, Supplementary Table S6), except for IL-10 (p = 0.06), CCL3 (p = 0.07) and IL-17C (p = 0.08), in which an upwards trend was observed. Here, CCL3 is linked to rheumatoid arthritis.