Fig 3. Relationship between serum levels of cytokines (IL–6 or TNF–α) and Gal–9 in the sub–grouped RA patients according to the titers of ACPA.

There were significant correlations between serum levels of cytokines (IL–6 or TNF–α) and Gal–9, and these correlations were not modulated by the high status of ACPA titers. The correlations were determined using Spearman’s rank correlation test.