A large number of studies have shown that in the occurrence of KD, TNF-α, IL-6, TNFR, and other cytokines exist, and these cytokines lead to vascular endothelial cell damage in KD patients, and eventually causing vasculitis (Furukawa et al., 1994; Wang et al., 2011; Kumrah et al., 2020). Here, IL6 is linked to vasculitis.