RETN and asthma: The median concentration in LC patients compared to healthy non-smokers, asthma sufferers, and smokers was more than 200% higher in SAA (771%), MMP-9 (743%), IL-8 (535%), CXCL9/MIG (482%), TNFRI (406%), Gro (331%), MPO (300%), Rantes (274%), Resistin (271%), TNFRII (266), and MIF (219%).