As described in Table 1, the serum IL8 increased according to asthma severity; healthy controls, mild-type, moderate-type and severe-type were 22.5 ± 11.5, 34.9 ± 61.3, 82.0 ± 145.1, 735.5 ± 88.0 pg/ml, respectively (p = 0.036). This evidence concerns the gene CXCL8 and asthma.