IL1β, IL6, IL10, TNF, interferon gamma (IFNγ) and monocyte chemoattractant protein 1 (MCP1/CCL2) [29,30,31,32], and obesity-associated maternal cytokines likely access the fetus via the placenta [33,34]. The gene discussed is CCL2; the disease is obesity due to melanocortin 4 receptor deficiency.