To further examine the effect of SHP2 deletion on myeloid cells on psoriasis, we generated dendritic cells‐specific SHP2 conditional knockout mice, called DC‐Shp2−/− mice (Itgax‐cre:Shp2fl/fl mice), and examined the effect of Shp2 deletion in DCs and macrophages, as shown in Appendix Fig S10B–E. This evidence concerns the gene ITGAX and psoriasis.