The Gene Set Enrichment Analysis (GSEA) analyzed the enrichment of signaling pathways associated with the immune system in the Cluster 2 group, including IgA production using the intestinal immune pathway, cytokine-cytokine receptor interaction, and primary immunodeficiency, as well as B cell and T cell receptor signaling pathways (Figure 3(b)). Here, CD79A is linked to inborn error of immunity.