ABCG2 and neoplasm: Interestingly, genes involved in tumor formation, including the cell cycle, cell adhesion, and the Wnt signaling pathway, were positively correlated with pathogenic bacteria, including F. nucleatum and B. fragilis, whereas normal tissue-enriched bacteria including F. prausnitzii and B. vulgatus were positively correlated with genes involved in starch and sucrose metabolism, the intestinal immune network and ABC transporters.