GPT and liver disorder: The AST/ALT ratio is often used to assess liver function and reflect the severity of liver disease, and in their KD study, Wang et al. [37] confirmed that the smaller the AST/ALT ratio, the stronger the acute inflammatory response and the greater the risk of coronary artery injury and IVIG resistance; the ratio may therefore be a good predictor of coronary artery injury in patients with KD by reflecting the intensity of inflammation.