DRB1*03 allele was also a risk indicator associated with cirrhosis in AIH (Czaja, 2009; Czaja et al., 1999; Ma et al., 2021; Montano‐Loza et al., 2006; Montano‐Loza et al., 2012), ASC (Ma et al., 2021), and chronic hepatitis C (Hue et al., 2002). This evidence concerns the gene HLA-DRB1 and chronic hepatitis C virus infection.