CXCL8 and granulomatosis with polyangiitis: Although there are no studies on the role of CXCL8 and CCR1 in KD, these genes play important roles in immune‐related diseases such as vasculitis, Takayasu arteritis, glomerulonephritis, and granulomatosis with polyangiitis (Wegener's).41, 42, 43, 44