Interrogation of transcriptome data previously generated from lymphoblastoid cell lines [Dixon et al., 2007] (http://www.sph.umich.edu/csg/liang/asthma) revealed that all three PDCD4 SNPs rs1322997:C>A, rs6585018:G>A, and rs34104444:G>A that had shown associations with severe asthma were correlated with the expression levels of PDCD4 (LOD scores 2.64, 2.43, and 2.59, respectively) (Table 3). Here, PDCD4 is linked to asthma.