The investigators found that the frequencies of ILC2s were increased in asthmatics (0.04±0.02%) compared to healthy subjects (0.025±0.011%) and the percentages of IL-13+ ILC2s were significantly higher in subjects with uncontrolled asthma (49.7±16.9%) and partly controlled groups (30.8±13.1%) compared to the well-controlled group (16.7±5.9%) and healthy controls (18.7±8.7%). This evidence concerns the gene IL13 and asthma.