GPT and chronic hepatitis B virus infection: The Th17/IL-17 axis is associated with high disease severity in CVHs, as found in a study where patients with chronic hepatitis B (CHB) had higher percentage of Th17 cells in peripheral blood than healthy controls (HCs) (1.53 vs. 0.92%); and among patients there was a positive correlation between peripheral Th17 cells and serum alanine aminotransferase (ALT) (58).