Research Article

Integration of SNP Disease Association, eQTL, and Enrichment Analyses to Identify Risk SNPs and Susceptibility Genes in Chronic Obstructive Pulmonary Disease

Figure 5

Correlation of genes. (a) Histogram of coexpression analysis of TNFAIP3 and TNF. (b) Histogram of coexpression analysis of COL6A5 and ITGB6. The dotted line represents the threshold level of 0.05. Three function methods were used, respectively, namely, Kendall, Pearson, and Spearman rank. Label along the -axis indicates the significance of the extent of correlation. The green histogram refers to the nonvariant samples, while the red histogram is the variant samples.
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