The abundance of Faecalibacterium prausnitzii (5.2%) decreased in SBP patients and was negatively correlated with WBC (P=0.02, r=-0.30), CRP (P=0.03, r=-0.29), PCT (P<0.01, r=-0.43), TB (P=0.04, r=-0.26), and CTP scores (P<0.01, r=-0.43). This evidence concerns the gene CRP and tuberculosis.