The enrichment result with top 300 genes, which showed a negative correlation with the usage of TCR segments, was identified through enrichment of several KEGG pathway terms, including inflammatory bowel disease (adjusted p = 0.0012), Th1- and Th2-cell differentiation (adjusted p = 0.0011), rheumatoid arthritis (adjusted p = 0.0051), Epstein–Barr virus infection (adjusted p = 0.0416), and intestinal immune network for IgA production (adjusted p = 0.0468). Here, CD79A is linked to inflammatory bowel disease.