DNAJB11 and rheumatoid arthritis: We could not confirm the increase of expression for DNAJB11 in RA biopsies (Figure 2A) but DNAJB11 was correlated with the histological inflammatory score (r = 0.54, P < 0.01), suggesting that the most inflamed OA biopsies already presented a high level of DNAJB11 (Table 1).