This cross-talk between adipose tissue and macrophages is a source of many cytokines such as tumor necrosis factor alpha (TNFα), interleukin (IL)-6, resistin, retinol binding protein-4 (RBP4), which are suspected to participate in low-grade pro-inflammatory processes leading to metabolic disorders, insulin resistance, and CVDs (7). The gene discussed is RBP4; the disease is metabolic disease.