Analyses in KEGG pathways revealed that systemic lupus erythematosus, linoleic acid metabolism, regulation of autophagy, Notch signaling pathway, MAPK signaling pathway, Wnt signaling pathway, apoptosis, ERBB signaling pathway, and mTOR signaling pathway were correlated with the seven prognostic genes (Figure 5B). Here, EGFR is linked to systemic lupus erythematosus.