In this paper, patients with ICI hepatitis undergoing a liver biopsy showed longer median (IQR) time to ALT normalization (42 [6,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53] vs. 33 [6,27,28,29,30,31,32,33,34,35,36,37] days; p = 0.01) and to ALT levels of 100 U/L or less (21 [2,17,18,19,20,21,22,23,24,25] vs. 15 [14,15,16,17] days; p = 0.01). This evidence concerns the gene GPT and hepatitis A virus infection.