HK2 and systemic lupus erythematosus: Specifically, HK2 was significantly enriched in the “Neurotrophin signaling pathway,” “Epithelial cell signaling in Helicobacter pylori infection,” and “MAPK signaling pathway,” while PTAFR was primarily involved in “Leukocyte transendothelial migration,” “Endocytosis,” and “Systemic lupus erythematosus” pathways.