In order to make comparisons with TLR9, TGF-β1, and PDGF-B, other cytokines (including monocyte chemoattractant protein (MCP)-1, interferon-stimulated gene (ISG)15, and interferon (IFN)α) were detected in SLE patients. The gene discussed is PDGFB; the disease is systemic lupus erythematosus.