Fig. 2

Correlation between European League Against Rheumatism Sjögren’s Syndrome Disease Activity Index (ESSDAI) scores and concentrations of nine screened serum proteins analyzed by ELISA in the validation cohort of patients with primary Sjögren’s syndrome (n = 58). The nine proteins were CXCL13, TNF receptor 2 (TNF-R2), CD48, B-cell activating factor (BAFF), programmed cell death protein 1 ligand 2 (PD-L2), lymphocyte activation gene-3 (LAG-3), β2-microglobulin (β2MG), ephrin type-B receptor 2 (EPHB2), and CD163. Pearson’s correlation test was used. The correlation coefficients (r) and P values are shown in the table. P <0.05 was considered significant