PIK3CA and cancer: In addition, to further figure out the characteristic of these 5 immune genes in IA-CFMSN, we made a KEGG enrichment analysis, as a result, 3 significant pathways were identified: Pathways in cancer (hsa05200), PI3K-Akt signaling pathway (hsa04151), and Intestinal immune network for IgA production (hsa04672).