Through quantitative PCR (qPCR) technology, we found that the relative abundance of AKK in the feces of AP patients was significantly lower than that of healthy subjects (Figure 1I), and the relative abundance of AKK in the feces of AP patients was negatively correlated with the levels of plasma inflammatory factors (Figures 1J–L), C-reactive protein (Figure 1M), and the severity of APACHE II score (Figure 1N) in the patients. Here, CRP is linked to alkaline phosphatase measurement.