Interestingly, a series of commonly upregulated genes were identified in brucellosis patients, with seven genes/transcription factors (RGS1, DUSP1, FOS, PPP1R15A, TNFAIP3, HLA‐E, and ZFP36) being the most frequent (nine times among nine clusters) (Figure 5A, Figure 7SA). This evidence concerns the gene FOS and brucellosis.