CCL2 and asthma: The relationship of MCP-1 with more than one growth factors including GM-CSF, FGF-2, and PDGF as we detected in asthma only patients is in agreement, at least in part, with previous reports showing that FGF-2/PDGF and GM-CSF were detected and important as remodeling and susceptibility biomarkers, respectively, for allergic asthma [24–26].