GPT and disorder of glycogen metabolism: The systematic review and meta-analysis showed that AST (pooled OR = 1.30, 95% CI: 1.01–1.68, p = 0.04), ALT (pooled OR = 1.16, 95% CI: 1.04–1.29, p = 0.006), and ALP (pooled OR = 1.49, 95% CI: 1.12–1.96, p = 0.006) were positively associated with the risk of GSD in previous studies (Figure S1).