On the other hand, Doe and coworkers observed that the number of IL-17A+ cells was correlated with FEV1% predicted (Rs = 0.38;  P = .04), and the sputum neutrophil count (Rs = −0.43,P = .03) in asthma but was not associated with the number of neutrophils or eosinophils in the bronchial mucosa [28]. This evidence concerns the gene IL17A and asthma.