Inflammatory regulators described in the pathogenesis of both BPD and ROP include monocyte chemotactic protein 1 (MCP-1/CCL2), macrophage inflammatory protein 1 alpha (MIP-1α/CCL3), interleukin 6 (IL-6) (5, 6, 104–108), and macrophage inhibitory factor (109–111). This evidence concerns the gene CCL3 and bronchopulmonary dysplasia.