Synovial membrane cytokine expression is predictive of joint damage progression in rheumatoid arthritis: A two‐year prospective study (the DAMAGE study cohort)

Abstract

We have demonstrated for the first time in a prospective study that synovial membrane cytokine mRNA expression is predictive of joint damage progression in RA. The findings for IL-1beta and TNFalpha are consistent with results of previous clinical research, but the protective role of IFNgamma, the differing effects of disease duration, and IL-17-cytokine interactions had only been demonstrated previously by animal and in vitro research. These findings explain some of the variability of joint damage in RA and identify new targets for therapy.