The mean fluorescence intensity (MFI ± SEM) of LAMR1 expression on monocytes from patients with RA was 16.3 ± 3.2 and this was significantly lower than the average MFI of 24.8 ± 2.7 observed on monocytes of healthy individuals (p = 0.045) (Fig. 1D). Here, RPSA is linked to rheumatoid arthritis.