Type 2 inflammation (type 2 T helper cell lymphocyte) is common in asthma patients, and it is linked to certain inflammatory cells (mast cells, eosinophils, type 2 T helper cell lymphocyte, IgE-producing plasma cells, and basophils) and cytokine profiles (IL-13, IL-5, IL-4) [26]. The gene discussed is IL4; the disease is asthma.