HLA-DRB1 and chronic hepatitis C virus infection: In other chronic liver diseases, such as AIH (Czaja, 2009; Czaja et al., 1999; Ma et al., 2021; Montano‐Loza et al., 2006; Muratori et al., 2009), autoimmune sclerosing cholangitis (ASC) (Ma et al., 2021), portal fibrosis (Varma et al., 2016), chronic hepatitis B (Doganay et al., 2014; Han et al., 2012), and chronic hepatitis C (Aikawa et al., 1996; Hue et al., 2002; Urabe et al., 2013), HLA‐DRB1 alleles also conferred a risk or protective effect on cirrhosis.