IL2 and allergic disease: The present results corroborate our earlier findings indicating the disease alleviating potential of IL‐2/αIL‐2 complex‐expanded Tregs in allergy.4 The here‐presented data show that treatment with IL‐2/αIL‐2 complexes induces long‐term changes in the peripheral Treg cell compartment and the main target organ, that is, the lung.