FCGR2A and rheumatoid arthritis: In another microarray-based study (GSE1050, n = 8 samples) in RA analyzing the transcriptome of synovial macrophages, Avila-Pedretti et al. [39] found that the RGS12 gene was negatively correlated with FCGR2A gene expression (average r2 = −0.96, p < 0.001).