PTPN11 and psoriasis: Dendritic cells play an important role in both the initiation (Wang & Bai, 2020) and developmental stages (Ganguly et al, 2009; Brunner et al, 2013; Riol‐Blanco et al, 2014) of psoriasis; however, the conditional knockdown of SHP2 in dendritic cells did not ameliorate psoriasis‐like skin inflammation in mice, or in γδTh17 cells (Kadekar et al, 2020).