After that, the identified differential metabolites were subjected to functional analysis, and based on p < 0.05, 37 KEGG pathways were significantly enriched, including “biosynthesis of plant secondary metabolites”, “biosynthesis of amino acids”, “central carbon metabolism in cancer”, “arginine and proline metabolism”, “alanine, aspartate and glutamate metabolism”, “linoleic acid metabolism”, and “intestinal immune network for IgA production” (Figure 5C). This evidence concerns the gene CD79A and cancer.