IL13 and asthma: A study of the effect of omalizumab on clinical improvement of asthma and inflamatory mediators showed a reduction in the release of cytokines (IL-4, Il-8, and IL-13) by basophils from omalizumab-treated patients, along with the reduction of IL-5 and IL-13 release in cocultures of plasmacytoid dendritic cells and T cells.