The expression of other cytokines tested (IL-4, IL-6, IL-10, IL-17F, IL-21, IL-22, GM-CSF, and TGFβ) was relatively low in these five TRM clusters, although some PsA TRM clusters showed higher expression levels compared with their RA counterparts (Figure S2). Here, TGFB1 is linked to rheumatoid arthritis.