KD: Kawasaki disease; CAL: coronary artery lesions; HC: health controls; nCAL: no CAL; CRP: C reaction protein; Alb: albumin; ADAM17: A disintegrin and metalloproteinase domain 17; MMP9: matrix metalloproteinase 9; Sema7A: Semaphorin 7A. This evidence concerns the gene MMP9 and Kawasaki disease.