Fig. 2

The relationship between SLAMF6 expression and severity of RA. a Patients in active RA group (n = 27) had significantly higher SLAMF6 expression than patients in inactive RA group (n = 23). b The mRNA expression level of SLAMF6 was remarkably correlated with serum RF (r = 0.30, p = 0.03). No significant correlation with ESR (r = 0.08, p = 0.60) or CRP (r = − 0.15, p = 0.29) was found