HLA-DRB1 and hepatitis B virus infection: In a recent study conducted by our team, we identified a significant association between specific HLA alleles, including DQ alleles (DQB1*06:03:01, DQB1*06:02:01, and DQA1*01:03:01), along with DR alleles (DRB1*13:01:01, DRB1*15:01:01, and DRB5*01:01:01) and a reduced risk of hepatitis B virus infection in the Romanian population [11].