RPL31 and rheumatoid arthritis: Although RPL31 was reported to be important in regulation of osteogenic differentiation (Peng et al., 2022), and was identified as one of the top dysregulated genes in the synovium of rheumatoid arthritis (RA) patients (Ramezankhani et al., 2021), the exact role of RPL31 in synovial aging or diseases remains unexplored.