Tezepelumab is an epithelial cytokine, and is the first and only biologic approved in Europe by EC for severe asthma for adults and adolescents with inadequately controlled severe asthma with no phenotype or biomarker limitations. Tezepelumab acts by blocking thymic stromal lymphopoietin (TSLP). Most common adverse events in patients were pharyngitis, rash, arthralgia, and injection site reactions.