Baseline levels of IgG autoantibodies in Prog (progressor) and NProg (nonprogressor) patient subsets. Values represent mean fluorescence intensities (MFI). The two patient groups were compared using an unpaired Student's t-test. The seven autoantibodies shown represent those with significant differences (P < 0.05) between Prog and NProg subsets, which also had absolute expression values of at least 4 MFI.
Olsen et al. Arthritis Research & Therapy 2012 14:R174 doi:10.1186/ar3927