PDLIM2 and rheumatoid arthritis: RT-qPCR was used to detect the expression of PDLIM2 in normal-FLSs and RA-FLSs, and the results showed that the expression of PDLIM2 in RA-FLSs was significantly decreased compared with that in normal-FLSs (P < 0.001, Figure 1(a-b)).