IL17A and primary biliary cholangitis: The role of Th17/IL-17 axis in hepatic fibrosis has been found in various liver diseases such as NASH (117, 118), obstructive cholestasis (169), PSC (112), PBC (16, 114, 115), biliary atresia (29, 116), drug-induced (91, 170), protozoa-associated cirrhosis (87, 171, 172), and viral hepatitis (20, 30, 44, 173).