PTPN11 and psoriasis: Oxidative stress, granule composition, and neutrophil extracellular traps of neutrophils are associated with the initial and maintenance phases of psoriasis (Lin et al, 2011; Katayama, 2018; Chiang et al, 2019; Jiang et al, 2019; Wang & Jin, 2020; Wójcik et al, 2020), and the role of SHP2 in these phenomena needs to be further investigated.