Levels of VEGF, IL-6, IL-8, inducible protein-10 (IP-10), intercellular adhesion molecule 1 (ICAM-1), and monocyte chemotactic protein 1 (MCP-1) are associated with macular edema in type 2 diabetic patients [33,34]. The gene discussed is CCL2; the disease is type 2 diabetes mellitus.