STK4 and rheumatoid arthritis: Specifically, we report increased expression of MOB1A, MOB1B, DCP2, LATS1, and STK4 (all p < 0.0001) in RA synovial tissue with a concomitant significant decrease in LATS2 (p < 0.0001) in RA synovial tissue compared to healthy donor tissue (Figure 5A).