It is well accepted that the imbalance of cytokine network plays a vital part in asthma.[14] To uncover the potential association between IL-4, IL-6, and IL-12 levels and lung function, this study investigated the roles of IL-4, IL-6, and IL-12 levels, T cell subset, and erythrocyte immune in children with moderate and severe asthma. Here, IL6 is linked to asthma.