The NAS score and its subscores steatosis and ballooning as well as liver fibrosis inversely correlated with P-IL21 (respectively, r = -0.44; p = 0,005, r = -0.48; p = 0.002, r = -0.33; p = 0.04, r = -0.33; p = 0.03). Here, IL21 is linked to steatosis.