Functional enrichment analysis
We conducted GO and KEGG enrichment analyses of differentially expressed genes (DEGs) based on different risk subgroups to investigate their possible involvement in biological functions and their mechanisms. GO analysis revealed that the DEGs are involved in biological processes (BP) associated with tissue homeostasis and metabolic processes. For cellular components (CC), the DEGs were associated with the extracellular matrix. In the molecular function (MF) category, the DEGs were significantly enriched in receptor ligand activity, signaling receptor activator activity and cytokine activity (Fig. 