Among them, thymic stromal lymphopoietin (TSLP) is a novel interleukin (IL)-7-like cytokine and could initiate type 2 inflammatory response by TSLPR heterocomplex, which is composed of the IL-7Rα chain and TSLPR chain, in asthma airway [4, 5]. The gene discussed is TSLP; the disease is asthma.