These findings support the findings in the study reported by Xie et al. They found that Mig-expressing epithelial cells increased in asthmatic patients with high expressions of Th1-type cytokine mRNA on BAL cells and of Th2-type chemokine mRNA on epithelial cells, and that those patients had the lowest % FEV1 among the other asthma subtypes including Th1 cytokine high expression/Th2 chemokine low expression subtype, Th1 low/Th2 high, or Th1 low/ Th2 low [49]. Here, CXCL9 is linked to asthma.