Figure 2From: Decreased plasma levels of soluble CD18 link leukocyte infiltration with disease activity in spondyloarthritisThe soluble CD18 (sCD18) plasma concentration, HLA genotype, and spondyloarthritis (SpA) disease activity. (A) The sCD18 plasma level in HLA-B27-positive versus HLA-B27-negative SpA patients at the time of inclusion. The median values were 605.7Â mU/mL (interquartile range 461.6-704.1Â mU/mL) for HLA-B27-positive SpA patients and 670.0Â mU/mL (interquartile range 591.8-760.1Â mU/mL) for HLA-B27-negative SpA patients. Bars indicate median and interquartile range. (B) Correlation between the sCD18 plasma levels in HLA-B27-positive SpA patients and self-assessment and clinical scores. (C) Correlation between the sCD18 plasma levels in HLA-B27-positive SpA patients and clinical test results. Solid lines represent the best fit in linear regression. *P <0.05; **P <0.01; ***P <0.001; ****P <0.0001.Back to article page