TNF and rheumatoid arthritis: The KEGG results show that it is mainly enriched in Cytokine-cytokine receptor interaction, Complement and coagulation cascades, Viral protein interaction with cytokine and cytokine receptor, IL-17 signaling pathway, TNF signaling pathway, Protein digestion and absorption, Amoebiasis, Mineral absorption, Rheumatoid arthritis, Pertussis, Cholesterol metabolism pathways (Figure 7K).