ABCG2 and cancer: Spearman’s correlation analysis showed that the abundance of Escherichia and Citrobacter amalonaticus in the LST group was positively correlated with the ABC transporter metabolic pathway, biofilm formation-Escherichia coli, central carbon metabolism in cancer, and phosphotransferase system (PTS) pathways (p < 0.01 and p < 0.001, respectively).