Recently, Salimi et al. found the up‐regulation of killer cell lectin like receptor G1 (KLRG1) on ILC2 in atopic dermatitis, and Maazi et al. reported that inducible T‐cell co‐stimulator (ICOS) on ILC2 controlled type 2 inflammation 15, 16. This evidence concerns the gene KLRG1 and atopic eczema.